Directory of Researchers
| KUMAMOTO Etsuko |  |
| Information Science and Technology Center | |
| Professor | |
| Engineering / Other Field |
Researcher Profile and Settings
Affiliation
＜Faculty / Graduate School / Others＞
Information Science and Technology Center＜Related Faculty / Graduate School / Others＞
Faculty of Engineering / Department of Computer Science and Systems Engineering, Graduate School of System Informatics / Department of System Science, Center for Mathematical and Data Sciences
Teaching
- Office for the Promotion of International Exchange, 2021, Introduction to Computer Literacy
- Office for the Promotion of International Exchange, 2021, Introduction to Computer Literacy
- Graduate School of System Informatics / Department of System Science, 2021, Medical Information Systems
- Graduate School of System Informatics / Department of System Science, 2021, Theory of System Innovation
- Faculty of Engineering / Department of Computer Science and Systems Engineering, 2021, Media Information Processing
Research Activities
Research Interests
Research Areas
- Life sciences / Neurosurgery
- Life sciences / Medical equipment testing
- Life sciences / Medical systems
- Life sciences / Biomaterials
- Life sciences / Biomedical engineering
Committee Memberships
- May 2016 - Present, システム制御情報学会, 理事
- Dec. 2015 - Dec. 2016, 日本生体医工学会, 関西支部理事
- Oct. 2015, 日本コンピュータ外科学会, 評議員
- May 2014 - May 2016, システム制御情報学会, 常任理事
- 日本磁気共鳴医学会, 代議員
Awards
Sep. 2014 Interventional MRI Symposium 2014, Interventional MRI Symposium 2014, Poster Award, magna cum laude．, Respiratory-induced Deformation Analysis of Liver using Branching Structure of Portal Vein for MR Images for HIFU
International society
Published Papers
- Lead, Aug. 2020, Proceedings of ISMRM 28th Scientific Meeting, EnglishAnalysis of Physiological Brain Shift and Optic Chiasm in the Closed Cranium due to Postural Position
[Refereed]
International conference proceedings
Thermometry is the key factor for achieving successful thermal therapy. Although invasive thermometry with a probe has been used for more than four decades, this method can only detect the local temperature within the probing volume. Noninvasive temperature imaging using a tomographic technique is ideal for monitoring hot-spot formation in the human body. Among various techniques, such as X-ray computed tomography, microwave tomography, echo sonography, and magnetic resonance (MR) imaging, the proton resonance frequency shift method of MR thermometry is the only method currently available for clinical practice because its temperature sensitivity is consistent in most aqueous tissues and can be easily observed using common clinical scanners. New techniques are being proposed to improve the robustness of this method against tissue motion. MR techniques for fat thermometry were also developed based on relaxation times. One of the latest non-MR techniques to attract attention is photoacoustic imaging.
Elsevier BV, 2020, Advanced Drug Delivery Reviews, 163-164, 19 - 39, English, International magazine[Refereed][Invited]
Scientific journal
- The Japan Joint Automatic Control Conference, 2020, Proceedings of the Japan Joint Automatic Control Conference, 63 (0), 158 - 162, Japanese
- Jul. 2019, 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2731 - 2735, Englishmage reconstruction method with compressed sensing for high-speed MR temperature measurement of abdominal organs
[Refereed]
International conference proceedings
- Jun. 2018, Proceedings of International Society for Magnetic Resonance in Medicine 26th Annual Meeting and Exibition, EnglishNoninvasive Analysis of Brain Shift Transformation in Closed Cranium using MR Images Acquired in Different Body Positions
[Refereed]
International conference proceedings
- Jun. 2018, Proceedings of International Society for Magnetic Resonance in Medicine 26th Annual Meeting and Exibition, EnglishA Three-dimensional Template Matching Technique in Target Tracking Technique of MRgHIFU for liver
[Refereed]
International conference proceedings
- 神戸大学大学教育推進機構, Mar. 2018, 大学教育研究, 26, 1 - 8, Japanese電子教科書システムDITeLの利用履歴データ活用に向けた学修分析
[Refereed]
Research institution
- Dec. 2017, Proc. of 25th International Conference on Computers in Education 2017, 549 - 557, EnglishLearning Behavioral Pattern Analysis based on Students’ Logs in Reading Digital Books
[Refereed]
International conference proceedings
- Apr. 2017, Proceedings of International Society for Magnetic Resonance in Medicine 25th Annual Meeting and Exibition, EnglishA Three-dimensional Target Tracking Technique for MRgHIFU using an Image Matching Method with Liver Deformation Volumes Obtained via Time-Resolved Volume Acquisitions
[Refereed]
International conference proceedings
- Mar. 2017, Proceedings of The 2017 International Conference on Advanced Technologies Enhancing Education, 90 - 96, EnglishImproving Teaching Materials through Digital Book Reading Log
[Refereed]
International conference proceedings
- Measuring & Evaluating Digital Textbooks through Quizzes
We currently utilize the Moodle learning management system for teachers and students who participate in the course 'College of Liberal Arts and Sciences' at Kobe University in Japan. Digital textbooks, reports, quizzes and questionnaires in this course were administered using Moodle. In this paper, we proposed to use quizzes to measure and evaluate those digital textbooks recorded on Moodle. At the beginning of our study, we examined the questions that students got lower scores, and then we found the related teaching materials of digital textbooks and feedback to the teachers in order to improve the content of these digital textbooks.
Nov. 2016, Proc. of 24th International Conference on Computers in Education 2016 (ICCE2016), 374 - 379, English[Refereed]
International conference proceedings
Magnetic resonance-guided focused ultrasound (MRgFUS) is becoming one of the foremost treatment options for uterine fibroids and breast cancer. However, for an abdominal organ such as the liver, a target tracking technique to “lock on” to the focal area is required because the organ moves and deforms with respiratory motion. This technique, which is based on the relative displacement of the portal vein using sagittal MR images, is effective for translational motion and deformation because blood flow is visualized as high intensity in MR images using TrueFISP. The aim of this study was to develop a three-dimensional target tracking technique based on the results of an analysis of three-dimensional dynamic information about the portal vein structure. It is difficult to acquire multi-slice images quickly using MR. Therefore, in this study, we propose a method to reconstruct a three-dimensional dynamic model of the liver using multi-slice MR images acquired during slow breathing. Forty-two frames of the image set were acquired during slow breathing. The images were arranged in breathing phase order based on the motion of the diaphragm. Interpolated images were enhanced using a morphology technique and were inserted between the discontinuous frames. Finally, the images were interpolated in isotropic voxels in an out-plane direction. The experimental results demonstrate the feasibility of three-dimensional tracking based on a portal vein tree structure.
Japan Soc. of Med. Electronics and Biol. Engineering, 29 Oct. 2015, Transactions of Japanese Society for Medical and Biological Engineering, 53 (3), 168 - 178, Japanese[Refereed]
Scientific journal
- Jun. 2015, Proceedings of International Society for Magnetic Resonance in Medicine 23 th Annual Meeting and Exibition, 870, EnglishVisualization of porcine gastric ulcer in vivo using intracavitary RF probe and its navigation system
[Refereed]
International conference proceedings
- Jun. 2015, Proceedings of International Society for Magnetic Resonance in Medicine 23 th Annual Meeting and Exibition, 1837, EnglishComparison of gradient induced heating around an active implantable medical device
[Refereed]
International conference proceedings
- Jun. 2015, Proceedings of International Society for Magnetic Resonance in Medicine 23 th Annual Meeting and Exibition, 1647, EnglishAnalysis of Respiratory-induced 3D Deformation of Liver based on Branching Structure of Portal Vein obtained with Time-resolved Volume Acquisitions
[Refereed]
International conference proceedings
- Sep. 2014, Proceedings of 10th International Interventional MRI Symposium, 94, EnglishRespiratory-induced Deformation Analysis of Liver using Branching Structure of Portal Vein for MR Images for HIFU
[Refereed]
International conference proceedings
- Sep. 2014, Proceedings of 10th International Interventional MRI Symposium, 40, EnglishIn vivo MR imaging of porcine gastric ulcer model using intra-cavitary RF coil for MR-endoscope system
[Refereed]
International conference proceedings
- May 2014, Proceedings of International Society for Magnetic Resonance in Medicine 21th Annual Meeting and Exibition, 2324, EnglishMulti Planar Reconstruction Technique for MR-endoscope System based on Scope Tip Tracking with Gradient Field Sensor
[Refereed]
International conference proceedings
- May 2014, Proceedings of International Society for Magnetic Resonance in Medicine 21th Annual Meeting and Exibition, 2341, EnglishAnalysis of Three-Dimensional Liver Deformation Under Free Breathing Based on Branching Structure of Potral Vein for MR-Guided Focused Ultrasound Surgery
[Refereed]
International conference proceedings
- Apr. 2013, Proceedings of International Society for Magnetic Resonance in Medicine 21th Annual Meeting and Exibition, 1846, EnglishUsefulness of the WiiTM Remote Controller for Image Manipulation of MR-Endoscope System
[Refereed]
International conference proceedings
The MR-endoscope system can perform magnetic resonance (MR) imaging during endoscopy and show the images obtained by using endoscope and MR. The MR-endoscope system can acquire a high-spatial resolution MR image with an intraluminal radiofrequency (RF) coil, and the navigation system shows the scope's location and orientation inside the human body and indicates MR images with a scope view. In order to conveniently perform an endoscopy and MR procedure, the design of the user interface is very important because it provides useful information. In this study, we propose a navigation system using a wireless accelerometer-based controller with Bluetooth technology and a navigation technique to set the intraluminal RF coil using the navigation system. The feasibility of using this wireless controller in the MR shield room was validated via phantom examinations of the influence on MR procedures and navigation accuracy. In vitro examinations using an isolated porcine stomach demonstrated the effectiveness of the navigation technique using a wireless remote-control device.
2013, Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2013, 5698 - 701, English, International magazine[Refereed]
International conference proceedings
The goal of this study is to establish novel medical technologies by combining magnetic resonance imaging (MRI) with endoscopy to improve diagnostic precision and the safety of endoscopic surgeries. One of the key components of the integrated magnetic resonance (MR) endoscope system is a radio-frequency (RF) coil; this detects the MR signal from tissue and should be placed inside the body. Resonance characteristics such as the resonant frequency and the impedance of the RF coil, which affect the quality of MR images, change depending on the electric properties of the surrounding tissue and the coil deformation. Therefore, the technique of remote tuning and matching of the RF coil was developed, and its feasibility was investigated using a developed intracavitary RF coil, 1.5 tesla MR scanner, and models of phantom and resected porcine stomach. As a result, the frequency tuning and impedance matching was remotely adjusted in both models. In addition, the signal-to-noise ratio (SNR) of MR images was improved up to 134%. The developed remote tuning and matching technique was able to adjust the resonant characteristics of RF coil and can contribute the improvement of MR image quality, which would facilitate safe and precise endoscopy and endoscopic surgeries.
IEEE, 2013, 2013 35TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), 5706 - 5710, English[Refereed]
International conference proceedings
- Sep. 2012, Proceedings of 9th International Interventional MRI Symposium, 88, EnglishThree-Dimensional Motion Analysis of Portal Vein for Focal Spot Tracking using Stereoscopic MR Images
[Refereed]
International conference proceedings
- Sep. 2012, Proceedings of 9th International Interventional MRI Symposium, 143, EnglishNavigation for adequate MR scan with integrated MR-endoscope system using intraluminal RF coil
[Refereed]
International conference proceedings
- May 2012, Proceedings of International Society for Magnetic Resonance in Medicine 20th Annual Meeting and Exibition, 1577, EnglishThree-Dimensional Focal Spot Tracking Based on Portal Vain Tree Structure
[Refereed]
International conference proceedings
- May 2012, Proceedings of International Society for Magnetic Resonance in Medicine 20th Annual Meeting and Exibition, 1590, EnglishNavigation of Quick MR Scanning Setup with Intraluminal RF Coil for Integrated MR-Endoscope System
[Refereed]
International conference proceedings
The purpose of this study was to evaluate a novel vessel-tracking-based technique for tracking of human liver. The novelty of the proposed technique is that it measures the translation and deformation of a local tissue region based on the displacements of a set of vessels of interest instead of the entire organ. The position of the target point was estimated from the relative positions of the center-of-masses of the vessels, assuming that the topological relationship between the target point and center-of-masses is unchanged during breathing. To reduce inaccuracy due to the delay between vessel image acquisition and sonication, the near-future target position was predicted based on the vessel displacements in the images extracted from an image library acquired before the tracking stage. Experiments on healthy volunteers demonstrated that regardless of the respiratory condition, appropriate combinations of three center-of-masses from the vessels situated around the target-tissue position yielded an estimation error of less than 2 mm, which was significantly smaller than that obtained when using a single center-of-mass trio. The effect of the tracking delay was successfully compensated, with a prediction error of less than 3 mm, by using over four images selected from the image library. Magn Reson Med, 2011. (C) 2011 Wiley-Liss, Inc.
WILEY-BLACKWELL, Jan. 2012, MAGNETIC RESONANCE IN MEDICINE, 67 (1), 156 - 163, English[Refereed]
Scientific journal
- May 2011, Proceeding of 19th ISMRM Scientific Meeting and Exhibition, EnglishThree-Dimensional Motion Analysis of Hepatic Tissue for Focal Spot Tracking based on Portal Tree Structure
[Refereed]
International conference proceedings
Purpose The laparoscope has been invaluable in minimally invasive surgery, but provides only a surface view of target tissue; therefore it is lacking internal tissue information. In combination with the laparoscope for visualizing the cross-sectional view of the tissue, MRI is superior to ultrasonography or X-ray CT, because of its high soft-tissue contrast, arbitrary slice orientation and lack of radiation properties. Thus, we propose an integrated MR-laparoscopy system with a respiratory-synchronized navigation. Methods A transmit/receive RF coil for localized MR imaging with a 0.5 T open-MRI was mounted onto the tip of an MR-compatible laparoscope. The signal detection of the coil was examined with an excised porcine liver sample, an agar phantom and the abdominal wall of a healthy volunteer. A real-time navigation system to compensate for respiratory motion was developed, and examined with a healthy volunteer. Results The SNRs of the local MR images were 112, 62, and 62 in the liver sample, phantom, and volunteer. The navigation system successfully displayed the scope view, scope location and orientation, and MR images with respiratory-synchronized real time operation. Conclusions The MR-imaging and synchronization function of the proposed system seemed to be helpful for laparoscopic surgery.
SPRINGER TOKYO, Sep. 2010, JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES, 17 (5), 622 - 628, English[Refereed]
Scientific journal
Recently, several new endoscopic instruments have been developed. However, even with the full use of current modalities, the safety of endoscopic surgery is not guaranteed. Information regarding factors such as fibrosis and the blood vessels under the mucosa is very important for avoiding procedure-related complications. The aim of this study was to define the detailed anatomy of the gastric wall structure in vivo using original endoluminal radiofrequency coils for safer endoscopic therapy.Swine were used as the subjects and controlled with general anesthesia. Anatomical images were obtained with T1-weighted fast spin echo (T1FSE) and T2-weighted fast spin echo (T2FSE). Dynamic magnetic resonance (MR) angiography was also obtained with three-dimensional T1-weighted fast spoiled gradient recalled acquisition in the steady state (3D-DMRA) following the injection of hyaluronic acid sodium into the submucosal layer.Porcine gastric wall structure was visualized, and four layers were discriminated in the T1FSE and T2FSE images. The vascular structure was clearly recognized in the submucosa on 3D-DMRA.Endoluminal MR imaging was able to visualize the porcine stomach with similar quality to endoscopic ultrasonography imaging. Additionally, it was possible to visualize the vascular structures in the submucosal layer. This is the first report to show that blood vessels under the gastric mucosa can be depicted in vivo.
SPRINGER JAPAN KK, Jun. 2010, JOURNAL OF GASTROENTEROLOGY, 45 (6), 600 - 607, English[Refereed]
Scientific journal
- (一社)日本内視鏡外科学会, Dec. 2009, 日本内視鏡外科学会雑誌, 14 (7), 558 - 558, Japanese鏡視下肝切除・NOTESを支援するGPS navigationの開発
International conference proceedings
The purpose of this study was to visualize the gastric wall layers and to depict the vascular architecture in vitro by using resected porcine stomachs studied with high-spatial resolution magnetic resonance (MR) imaging. Normal dissected porcine stomach samples (n = 4) were examined with a 3 Tesla MR system using a newly developed surface coil. MR images were obtained by the surface coil as receiver and a head coil as transmitter. High-spatial-resolution spin-echo MR images were obtained with a field of view of 8 x 8 cm, a matrix of 256 x 128 and slice thicknesses of 3 and 5 mm. T1 and T2-weighted MR images clearly depicted the normal porcine gastric walls as consisting of four distinct layers. In addition, vascular architectures in proper muscle layers were also visualized, which were confirmed by histological examinations to correspond to blood vessels. High-spatial-resolution MR imaging using a surface coil placed closely to the gastric wall enabled the differentiation of porcine gastric wall layers and the depiction of the blood vessels in proper muscle layer in this experimental study.
SPRINGER TOKYO, May 2009, JOURNAL OF GASTROENTEROLOGY, 44 (5), 390 - 395, English[Refereed]
Scientific journal
- May 2008, Proc. 16th ISMRM Scientific Meeting and Exhibition, 1229 - 1229, EnglishHot Spot Tracking for Focused Ultrasound Surgery of Liver using Filtered Venography
[Refereed]
International conference proceedings
- May 2008, Proc. of International Society for Magnetic Resonance in Medicine: 16th Scientific Meeting & Exhibition, EnglishImage Fusion Techniques for Intergarated MR-Endoscope system
[Refereed]
International conference proceedings
- 日本ハイパーサーミア学会, Dec. 2007, Thermal medicine, 23 (4), 181 - 193, English
- 15 Jan. 2007, 日本磁気共鳴医学会雑誌, 27 (1), 1 - 12, JapanesePost-processing in Self-reference MR Thermometry
The purpose of this work is to develop a magnetic resonance (MR) technique for guiding a focal point created in Focused Ultrasound Surgery (FUS) onto a specific target position in an abdominal organ, such as the liver, which moves and deforms with respiratory motion. The translational distance, rotational angles, and amount of expansion and contraction of the organ tissue were measured by obtaining the gravity points of the veins filtered from the sagittal, cine MR images of healthy livers during free breathing. Using the locations of the vessels at each time point, the target position at which the ultrasound focus was to be placed was estimated. In the volunteer experiments (N = 2), the lower limit of the spatial matrix dimension for delineating the veins was 128 x 128. The average displacement of the liver was 19.6 +/- 3.6 mm in superior-inferior (SI) direction and 3.1 +/- 1.4 mm in anterior-posterior (AP) direction. The deformations were 3.7 +/- 1.1 mm in SI direction and 3.0 +/- 1.2 mm in AP direction. The error between the actual and the estimated target point was 0.7 +/- 0.5 mm in SI direction, 0.6 +/- 0.4 mm in AP direction and 1.0 +/- 0.5 mm in distance, and less than 2.1 mm in all the trials. These results suggested that the proposed technique is sufficient for targeting the focus on a specific tissue location and for tracking the slice slab for thermometry to cover the region of focus.
IEEE, 2007, 2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16, 2614 - 2617, English[Refereed]
International conference proceedings
The purpose of this work is to develop a magnetic resonance (MR) technique for guiding a focal point created in Focused Ultrasound Surgery (FUS) onto a specific target position in an abdominal organ, such as the liver, which moves and deforms with respiratory motion. The translational distance, rotational angles, and amount of expansion and contraction of the organ tissue were measured by obtaining the gravity points of the veins filtered from the sagittal, cine MR images of healthy livers during free breathing. Using the locations of the vessels at each time point, the target position at which the ultrasound focus was to be placed was estimated. In the volunteer experiments (N = 2), the lower limit of the spatial matrix dimension for delineating the veins was 128 x 128. The average displacement of the liver was 19.6 ±3.6 mm in superior-inferior (SI) direction and 3.1 ±1.4 mm in anterior-posterior (AP) direction. The deformations were 3.7 ± 1.1 mm in SI direction and 3.0 ±1.2 mm in AP direction. The error between the actual and the estimated target point was 0.7 ± 0.5 mm in SI direction, 0.6 ±0.4 mm in AP direction and 1.0 ± 0.5 mm in distance, and less than 2.1 mm in all the trials. These results suggested that the proposed technique is sufficient for targeting the focus on a specific tissue location and for tracking the slice slab for thermometry to cover the region of focus. © 2007 IEEE.
2007, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 2614 - 2617, English[Refereed]
International conference proceedings
- Method for target tracking in focused ultrasound surgery of liver using magnetic resonance filtered venography.
The purpose of this work is to develop a magnetic resonance (MR) technique for guiding a focal point created in Focused Ultrasound Surgery (FUS) onto a specific target position in an abdominal organ, such as the liver, which moves and deforms with respiratory motion. The translational distance, rotational angles, and amount of expansion and contraction of the organ tissue were measured by obtaining the gravity points of the veins filtered from the sagittal, cine MR images of healthy livers during free breathing. Using the locations of the vessels at each time point, the target position at which the ultrasound focus was to be placed was estimated. In the volunteer experiments (N = 2), the lower limit of the spatial matrix dimension for delineating the veins was 128 x 128. The average displacement of the liver was 19.6 +/- 3.6 mm in superior-inferior (SI) direction and 3.1 +/- 1.4 mm in anterior-posterior (AP) direction. The deformations were 3.7 +/- 1.1 mm in SI direction and 3.0 +/- 1.2 mm in AP direction. The error between the actual and the estimated target point was 0.7 +/- 0.5 mm in SI direction, 0.6 +/- 0.4 mm in AP direction and 1.0 +/- 0.5 mm in distance, and less than 2.1 mm in all the trials. These results suggested that the proposed technique is sufficient for targeting the focus on a specific tissue location and for tracking the slice slab for thermometry to cover the region of focus.
2007, Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference, 2007, 2614 - 7, English, International magazineScientific journal
Recently many researchers discuss the desirable curriculum of information education in undergraduate course due to the renewal of curriculum in high school. In order to reveal the learning opportunities in the previous curriculum, the authors conducted a survey regarding the initial learning opportunity before entering university in the previous curriculum. The results show that many students in the previous curriculum have not had enough learning experiences in expansive area. Even if students have learned such area, they have tended to study by themselves. Students who graduated from priv...
Japan Society for Educational Technology, 20 Dec. 2006, Japan journal of educational technology, 30 (3), 259 - 267, Japanese- Dec. 2006, Japan Journal of Educational Technology, 30 (3), 259 - 267, Japanese
[Refereed]
Scientific journal
Referenceless, or self-reference, thermometry is a technique for mapping temperature differences in the region of interest (ROI) using the baseline phase estimated by extrapolating the field in the surrounding region for estimation (RFE) and subtracting the estimated baseline from the measured field. In the present work a self-reference technique based on complex field estimation using 2D polynomials comprising complex-valued coefficients was proposed and optimized. Numerical simulations with a Gaussian-profiled phase distribution demonstrated that the ROI radius had to be 2.3-2.5 times the standard deviation (SD) of the Gaussian function in order to keep the error below 8% of the peak phase change. The area ratio between the ROI and the RFE had to be larger than 2.0 to maintain the error level. Based on the simulations, and phantom and volunteer experiments, the complex-based method with independently optimized polynomial orders for the two spatial dimensions was compared with the phase-based method using the similar-order optimization strategy. The complex-based method appeared to be useful when phase unwrapping was not removed. Otherwise, the phase-based method yielded equivalent results with less polynomial orders.
JOHN WILEY & SONS INC, Oct. 2006, MAGNETIC RESONANCE IN MEDICINE, 56 (4), 835 - 843, English[Refereed]
Scientific journal
Referenceless, or self-reference, thermometry is a technique for mapping temperature differences in the region of interest (ROI) using the baseline phase estimated by extrapolating the field in the surrounding region for estimation (RFE) and subtracting the estimated baseline from the measured field. In the present work a self-reference technique based on complex field estimation using 2D polynomials comprising complex-valued coefficients was proposed and optimized. Numerical simulations with a Gaussian-profiled phase distribution demonstrated that the ROI radius had to be 2.3-2.5 times the standard deviation (SD) of the Gaussian function in order to keep the error below 8% of the peak phase change. The area ratio between the ROI and the RFE had to be larger than 2.0 to maintain the error level. Based on the simulations, and phantom and volunteer experiments, the complex-based method with independently optimized polynomial orders for the two spatial dimensions was compared with the phase-based method using the similar-order optimization strategy. The complex-based method appeared to be useful when phase unwrapping was not removed. Otherwise, the phase-based method yielded equivalent results with less polynomial orders.
JOHN WILEY & SONS INC, Oct. 2006, MAGNETIC RESONANCE IN MEDICINE, 56 (4), 835 - 843, English[Refereed]
Scientific journal
Referenceless, or self-reference, thermometry is a technique for mapping temperature differences in the region of interest (ROI) using the baseline phase estimated by extrapolating the field in the surrounding region for estimation (RFE) and subtracting the estimated baseline from the measured field. In the present work a self-reference technique based on complex field estimation using 2D polynomials comprising complex-valued coefficients was proposed and optimized. Numerical simulations with a Gaussian-profiled phase distribution demonstrated that the ROI radius had to be 2.3-2.5 times the standard deviation (SD) of the Gaussian function in order to keep the error below 8% of the peak phase change. The area ratio between the ROI and the RFE had to be larger than 2.0 to maintain the error level. Based on the simulations, and phantom and volunteer experiments, the complex-based method with independently optimized polynomial orders for the two spatial dimensions was compared with the phase-based method using the similar-order optimization strategy. The complex-based method appeared to be useful when phase unwrapping was not removed. Otherwise, the phase-based method yielded equivalent results with less polynomial orders.
JOHN WILEY & SONS INC, Oct. 2006, MAGNETIC RESONANCE IN MEDICINE, 56 (4), 835 - 843, English[Refereed]
Scientific journal
Referenceless, or self-reference, thermometry is a technique for mapping temperature differences in the region of interest (ROI) using the baseline phase estimated by extrapolating the field in the surrounding region for estimation (RFE) and subtracting the estimated baseline from the measured field. In the present work a self-reference technique based on complex field estimation using 2D polynomials comprising complex-valued coefficients was proposed and optimized. Numerical simulations with a Gaussian-profiled phase distribution demonstrated that the ROI radius had to be 2.3-2.5 times the standard deviation (SD) of the Gaussian function in order to keep the error below 8% of the peak phase change. The area ratio between the ROI and the RFE had to be larger than 2.0 to maintain the error level. Based on the simulations, and phantom and volunteer experiments, the complex-based method with independently optimized polynomial orders for the two spatial dimensions was compared with the phase-based method using the similar-order optimization strategy. The complex-based method appeared to be useful when phase unwrapping was not removed. Otherwise, the phase-based method yielded equivalent results with less polynomial orders.
JOHN WILEY & SONS INC, Oct. 2006, MAGNETIC RESONANCE IN MEDICINE, 56 (4), 835 - 843, English[Refereed]
Scientific journal
Our challenge was to design and implement a dedicated temperature imaging feedback control system to guide and assist in a thermal liver ablation procedure in a double-donut 0.5T open MR scanner. This system has near-real-time feedback capability based on a newly developed "self-referenced" temperature imaging method using "moving-slab" and complex-field-fitting techniques. Two phantom validation studies and one ex vivo experiment were performed to compare the newly developed self-referenced method with the conventional subtraction method and evaluate the ability of the feedback control system in the same MR scanner. The near-real-time feedback system was achieved by integrating the following primary functions: (1) imaging of the moving organ temperature; (2) on-line needle tip tracking; (3) automatic turn-on/off the heating devices; (4) a Windows operating system-based novel user-interfaces. In the first part of the validation studies, microwave heating was applied in an agar phantom using a fast spoiled gradient recalled echo in a steady state sequence. In the second part of the validation and ex vivo study, target visualization, treatment planning and monitoring, and temperature and thermal dose visualization with the graphical user interface of the thermal ablation software were demonstrated. Furthermore, MR imaging with the "self-referenced" temperature imaging method has the ability to localize the hot spot in the heated region and measure temperature elevation during the experiment. In conclusion, we have demonstrated an interactively controllable feedback control system that offers a new method for the guidance of liver thermal ablation procedures, as well as improving the ability to assist ablation procedures in an open MR scanner. (c) 2006 Elsevier Ireland Ltd. All fights reserved.
ELSEVIER IRELAND LTD, Aug. 2006, EUROPEAN JOURNAL OF RADIOLOGY, 59 (2), 175 - 182, English[Refereed]
Scientific journal
Our challenge was to design and implement a dedicated temperature imaging feedback control system to guide and assist in a thermal liver ablation procedure in a double-donut 0.5T open MR scanner. This system has near-real-time feedback capability based on a newly developed "self-referenced" temperature imaging method using "moving-slab" and complex-field-fitting techniques. Two phantom validation studies and one ex vivo experiment were performed to compare the newly developed self-referenced method with the conventional subtraction method and evaluate the ability of the feedback control system in the same MR scanner. The near-real-time feedback system was achieved by integrating the following primary functions: (1) imaging of the moving organ temperature; (2) on-line needle tip tracking; (3) automatic turn-on/off the heating devices; (4) a Windows operating system-based novel user-interfaces. In the first part of the validation studies, microwave heating was applied in an agar phantom using a fast spoiled gradient recalled echo in a steady state sequence. In the second part of the validation and ex vivo study, target visualization, treatment planning and monitoring, and temperature and thermal dose visualization with the graphical user interface of the thermal ablation software were demonstrated. Furthermore, MR imaging with the "self-referenced" temperature imaging method has the ability to localize the hot spot in the heated region and measure temperature elevation during the experiment. In conclusion, we have demonstrated an interactively controllable feedback control system that offers a new method for the guidance of liver thermal ablation procedures, as well as improving the ability to assist ablation procedures in an open MR scanner. (c) 2006 Elsevier Ireland Ltd. All fights reserved.
ELSEVIER IRELAND LTD, Aug. 2006, EUROPEAN JOURNAL OF RADIOLOGY, 59 (2), 175 - 182, English[Refereed]
Scientific journal
- May 2006, Proceedings of ISMRM 14th Scientific Meeting, 1405, EnglishDevelopment of RF coil for integration system of endoscope with MRI for esophageal examination
[Refereed]
International conference proceedings
- May 2006, Proceedings of ISMRM 14th Scientific Meeting, 1415, EnglishAn Electromanetic Model for Cool-tip RF Needle Artifacts in Magnetic Resonance Imaging
[Refereed]
International conference proceedings
The self-reference method is a magnetic resonance (MR) thermometry method for mapping temperature changes in a target organ using the baseline phase field in a region of interest (ROI) estimated by the polynomial extrapolation of the field in the surrounding region (s) for estimating (RFE) and subtracting the baseline from the measured field. In the present work, optimization of the ROI and RFE to adopt this technique to MR-guided focused ultrasound surgery (MRgFUS) of uterine fibroid was examined. Both numerical simulation with the Gaussian-profiled heating region and application to clinic...
Japanese Society for Medical and Biological Engineering, 10 Dec. 2005, Transactions of the Japanese Society for Medical and Biological Engineering : BME, 43 (4), 585 - 594, Japanese- Magnetic Resonance Temperature Imaging for Focused Ultrasound Surgery using Self-reference Method
Application of the self-referenced method of magnetic resonance (MR) thermometry to focused ultrasound surgery (FUS) was examined. The temperature elevation values obtained by the technique in uterine fibroid treatments differed only for 2.99 ± 1.73°C from those by the conventional method when it was worse case in coronal slice, demonstrating usefulness and viability of the technique. © 2005 SICE.
Aug. 2005, Proc. SICE Annual Meeting 2005 in Okayama, 922 - 927, English[Refereed]
International conference proceedings
- Oct. 2004, Proc. of 5th Interventional MRI Symposium, 57, EnglishOptimization of the Self-Referenced Temperature Imaging Method
[Refereed]
International conference proceedings
- May 2004, 2004 Proceedings of ISMRM 12th Scientific Meeting, CD-ROM, EnglishThree Dimensional MR Guided Temperature Imaging Feedback System for Microwave Liver Ablations in an Open MRI
[Refereed]
International conference proceedings
- May 2004, 2004 Proceedings of ISMRM 12th Scientific Meeting, CD-ROM, EnglishOptimization of Complex Field Estimation in the Self-Reference Temperature Imaging Method
[Refereed]
International conference proceedings
- ELSEVIER SCIENCE BV, 2004, CARS 2004: COMPUTER ASSISTED RADIOLOGY AND SURGERY, PROCEEDINGS, 1268, 1318 - 1318, English
[Refereed]
International conference proceedings
- 2004, 2004 Proceedings of ISMRM 12th Scientific Meeting, CD-ROM, EnglishSelf-Referenced Temperature Imaging based on Complex Image Estimation and Target Tracking Slab
[Refereed]
International conference proceedings
- 2004, Proc. on Intl. Soc. Mag. Reson. Med., 12, 2689, EnglishMarking Technique for Banboo Tracking Catheter in MR Guided Intervention
[Refereed]
International conference proceedings
- 2003, Memoirs， The Faculty of Information Technology and Electronics， Tokai University, Vol.28,pp.63-67, EnglishMagnetic Resonance Thermography Using Water Proton Chemical Shift: Preliminary Results on Self-referenced Technique for Motion Compensation
[Refereed]
Scientific journal
- 2003, Proceedings on International Society of Magnetic Resonance in Medicine 11th Scientific Meeting, 1176, EnglishEndoscope-MR probe coil for detection of the tumor invasion in open MRI System
[Refereed]
International conference proceedings
The reconstruction of three dimensional structure of cerebral arteries from two dimensional cineangiograms is useful to extract three dimensional information in the angiograms. In this paper, we consider the extraction of vessel center lines from the cineangiograms, which is a basic and important process for the three dimensional reconstruction. As the structure of cerebral arteries is extremely complicated and the vessel regions on the cineangiograms cross and overlap with each other, it is difficult to extract vessel center lines. A framewise extraction method is developed in this study, which repeats the vessel extraction upon each of a series of cineangiograms. On each frame, the system selects a proper image processing algorithm and parameters for the vessels under processing. The extraction method combines both the edge detection and the segmentation to improve the accuracy of vessel extraction from a single frame of cineangiograms. A vessel examining process is also proposed, which evaluates the possibility of extracted center lines being real cerebral arteries. The knowledge about cerebral arteries as well as that of cineangiograms is utilized in the processes for vessel extraction and vessel examination to improve the accuracy of the extraction results. © 1993, Japanese Society for Medical and Biological Engineering. All rights reserved.
1993, Japanese journal of medical electronics and biological engineering, 31 (1), 37 - 46, English[Refereed]
Scientific journal
MISC
- システム制御情報学会, 22 May 2019, 第63回システム制御情報学会研究発表講演会, 63, 1115 - 1119, JapaneseImage reconstruction method with compressed sensing for high-speed MR temperature measurement of abdominal organs
Meeting report
- 2017, Thermal Medicine, 33 (Supplement)肝MRgFUSにおける3次元焦点トラッキング
- 2017, Thermal Medicine, 33 (1)パターンマッチングを用いた肝MRgHIFUの3次元焦点追尾手法
- 2013, Thermal Medicine, 29 (Supplement)MRガイド下集束超音波治療における非侵襲温度分布モニタリング
- Sep. 2010, 8th Interventional MRI Symposium, EnglishThree-Dimensional Motion Analysis for Local Volume of Hepatic Tissue under Sonication Based on Portal Tree Structure
[Refereed]
Others
- Sep. 2010, 8th Interventional MRI Symposium, EnglishImage-based correction of tracking sensor measurements for fusion display in MR-endscope
[Refereed]
Others
- 一般社団法人日本外科学会, 05 Mar. 2010, 日本外科学会雑誌, 111 (2), JapaneseOP-031-2 早期胃癌に対する内視鏡的粘膜下層剥離術ESD,経管腔的内視鏡手術NOTESと単孔式腹腔鏡下手術の標準化とGPS navigationの開発(新しい低侵襲手術-1,一般口演,第110回日本外科学会定期学術集会)
- (一社)日本外科学会, Mar. 2010, 日本外科学会雑誌, 111 (臨増2), 339 - 339, Japanese早期胃癌に対する内視鏡的粘膜下層剥離術ESD、経管腔的内視鏡手術NOTESと単孔式腹腔鏡下手術の標準化とGPS navigationの開発
- 2010, システム制御情報学会研究発表講演会講演論文集(CD-ROM), 54th血管樹状構造に着目した肝臓の変位・変形解析
- 21 Nov. 2009, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 11 (3), 208 - 209, JapaneseMR Endoscope Tracking based on induced electromotive force conducted by time-varying magnetic field
- (株)へるす出版, Aug. 2009, 消化器外科, 32 (9), 1499 - 1505, Japanese消化管・肝胆膵ベッドサイドイメージング フリーソフトウェアOsiriXによる遠隔医療とテレメンタリング
- (株)へるす出版, Jul. 2009, 消化器外科, 32 (8), 1371 - 1379, Japanese消化管・肝胆膵ベッドサイドイメージング フリーソフトウェアOsiriXによるPACSeラーニング
- 20 May 2009, システム制御情報学会研究発表講演会講演論文集(CD−ROM), 53rd, ROMBUNNO.T15-3, Japanese
- 2009, Therm Med, 25 (Supplement), 115, Japanese血管の樹状構造に基づく肝臓の面外変位計測
- 2009, Therm Med, 25 (Supplement), 43, JapaneseMRIによる非侵襲温度分布画像計測法の高度化
- 15 Jan. 2008, 日本磁気共鳴医学会雑誌, 28 (1), Japanese腹腔臓器に対するMRガイド下集束超音波治療のための照射位置推定の検討
- 15 Jan. 2008, 日本磁気共鳴医学会雑誌, 28 (1), JapaneseMR-内視鏡融合システムにおける画像呈示法
- 2008, Thermal Medicine, 24 (Supplement)集束超音波治療における磁気共鳴による非侵襲・自己参照型温度分布画像化のための目標点追尾
- 30 Dec. 2007, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 9 (3), 262 - 263, JapaneseEstimation Method of Focal Point in Magnetic-Resonance guided Focused Ultrasound Surgery of Liver
- 30 Dec. 2007, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 9 (3), 338 - 339, JapaneseImage Fusion Technique for Integrated Magnetic-Resonance Endoscope system
- Mar. 2007, 神戸大学大学院自然科学研究科紀要, 第25号-B;pp.11-20 (25-B), Japanese腹腔臓器のMRガイド下集束超音波治療のための温度分布ならびに臓器移動・変形量の計測
[Refereed]
Report scientific journal
- 2007, Thermal Medicine, 23 (Supplement)強力集束超音波療法の現状とこれから 集束超音波治療のための磁気共鳴による非侵襲・自己参照型温度分布画像化法
- 2007, システム制御情報学会研究発表講演会講演論文集, 51st (CD-ROM)Method for Tracking Focal Point in Magnetic-Resonance-guided Focused Ultrasound Surgery
- 2007, Thermal Medicine, 23 (Supplement)磁気共鳴による非侵襲・自己参照型温度分布画像化法の実用化
- 30 Dec. 2006, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 8 (3), 316 - 317, JapaneseImage Fusion for Integrated Magnetic-Resonance Endoscope system
- 30 Dec. 2006, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 8 (3), 192 - 193, JapaneseDevelopment of Positioning System for MR-Endoscope : effect assessment of ambient surrounding
- 24 Nov. 2006, 電気学会産業システム情報化研究会資料, 2006 (45), 5 - 10, JapaneseA Study on Assisted System for Thermal Therapy Adapted to Respiratory Motion
- Nov. 2006, 電気学会産業システム情報化研究会資料, IIS-06-46;pp.5-10 (45-49), Japanese体動を考慮した温熱治療支援システムに関する研究
[Refereed]
Report scientific journal
- 2006, 自動制御連合講演会(CD-ROM), 49thA Study on Estimation method of Phase Map for the Self-Reference Thermometry
- 2006, 自動制御連合講演会(CD-ROM), 49thMethod of Tracking Focal Position of Ultrasound Treatment using Magnetic Resonance Imaging
- 2006, 低温医学, 32 (3)MRIによる生体内温度分布の非侵襲画像化:腹腔臓器を対象とした治療部位追尾と自己参照型温度分布画像化
- 30 Dec. 2005, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 7 (3), 455 - 456, JapaneseDevelopment of Positioning System for MR-Endoscope
- 2005, システム制御情報学会研究発表講演会講演論文集, 49thThree Dimensional MR Temperature Imaging using the Self-referenced Method
- 2004, 日本磁気共鳴医学会雑誌, 24 (Supplement(Sept))自己参照型差分法を用いた温度計測の定量性
- 2004, 日本磁気共鳴医学会雑誌, 24 (Supplement(Sept))Gd-DTPA錯体ポリマー組成物によるIVR用MRマーカの開発
- 30 Dec. 2003, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 5 (3), 363 - 364, JapaneseOptimization of phase estimation process in MR Temperature Imaging Using the Self-Referenced Phase Subtraction Method
- 30 Dec. 2003, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 5 (3), 361 - 362, JapaneseMethod of Compensating the Phase Discontinuity in a "Self-Reference" Type Temperature Distribution Imaging
- 30 Dec. 2003, Journal of Japan Society of Computer Aided Surgery : J.JSCAS, 5 (3), 269 - 270, JapaneseDevelopment of a MR-based Assistant System for Thermal Therapies
- 2003, Medical Imaging Technology, 21 (3), 201 - 207, Japanese
Others
- 2003, 日本ME学会大会論文集, 42ndMRガイド下IVRにおける3次元カテーテルトラッキング
- 2003, 計測自動制御学会関西支部シンポジウム講演論文集, 2003自己参照型差分法によるMRI温度分布計測
- RADIOLOGICAL SOC NORTH AMERICA, Nov. 2002, RADIOLOGY, 225, 164 - 164, EnglishMicrowave thermal ablation of a porcine liver with temperature monitoring in open MR
Summary international conference
- 産業開発機構, Apr. 2002, 映像情報medical, 34 (5), 450 - 453, Japanese医用画像処理における工学的手法--両眼立体視の理論とその応用 (特集 医学・工学連携型研究事業神戸プロジェクト)
- 2002, 日本医学放射線学会雑誌, 62 (3)MRIガイド下血管系IVRシステム In vivoにおけるcatheter tracking study
- 10 Jun. 2000, 光学, 29 (6), 380 - 381, JapaneseThree-Dimensional Reconstruction of Cerebral Arteries from Stereo Angiograms Using Stereopsis Theory and Boltzmann Machie
- システム制御情報学会, 15 Feb. 1999, Transactions of the Institute of Systems,Control and Information Engineers, 12 (2), 127 - 135, Japanese
- 25 Mar. 1998, Med.Imag.Tech., 16 (2), 146 - 156, Japanese
- 神戸大学, Mar. 1998, 神戸大学大学院自然科学研究科紀要. B, 16 (0), 81 - 88, Japaneseニューラルネットワークによるバイプレーン樹状心線の高速な対応付け
- システム制御情報学会, 15 Jul. 1996, Transactions of the Institute of Systems,Control and Information Engineers, 9 (7), 329 - 336, Japanese
- 01 Jul. 1996, Medical imaging technology, 14 (4), 433 - 434, JapaneseThree Dimensional Reconstruction of Cerebral Arteries from Stereo Angiograns Using Boltzmann Machine
- A Triangulation Algorithm for Three : Dimensional Surface Model
X-ray Computerliged tomography (CT) and nuclear magnetic resonance (NMR) - CT images are usually obtained as a series of two -dimensional images. We have to reconstruct the three -dimensional shapes from those cross sectional images. Surface models as well as solid models are used to represent the three dimensional images. This paper proposed a triangulation algorithm based on some criteria by using the directed graph theory together with dynamic programming (DP) to reconstruct the three -dimensional surface model. Some simple examples according to the minimum surface criterion showed that ...
Kobe University, 1995, 神戸大学医学部保健学科紀要, 11 (0), 23 - 29, Japanese In the external beam radiotherapy, it is required to optimize the number of beams, the beam angles and the strength of irradiation which deliver the desired dose to the tumour while limiting the dose absorbed in the normal tissue. Mathematical programming techniques are reported to be useful to solve this optimization problem with various types of formulation. In this study, we formulate this problem as a Linear Programming (LP) problem minimizing the mean dose in a buffer region, which is a region located around the tumour to ensure the effectiveness of the solution and the availability of the feasible solution. An illustrative plan of a treatment of cerebral tumour is given to demonstrate the effectiveness of the proposed method. © 1995, Japanese Society for Medical and Biological Engineering. All rights reserved.
日本エム・イー学会, 1995, Japanese journal of medical electronics and biological engineering, 33 (4), 301 - 309, English- Kobe University, Mar. 1994, Mem. Grad. School Sci. & Technol., Kobe Univ. B, 12 (0), 151 - 157, JapaneseA Basic Research on Matching of Biplane Tree Images by Neural Network
- Kobe University, 1992, 神戸大学医療技術短期大学部紀要, 8 (0), 55 - 60, JapaneseThree Dimensional Reconstruction and Measurements of Quadriceps Femoris Muscle by Using MRI Images
- 社団法人日本オペレーションズ・リサーチ学会, 16 Oct. 1991, 日本オペレーションズ・リサーチ学会秋季研究発表会アブストラクト集, 1991 (0), 174 - 175, Japanese放射線腔内照射治療計画に対する線形計画法の適用(数理計画応用)
- システム制御情報学会, 26 May 2021, システム制御情報学会研究発表講演会講演論文集, 65, 867 - 870, JapaneseTumor Characteristic Analysis for realizing prognosis prediction in pre-clinical MR images
- The Japan Joint Automatic Control Conference, 2021, Proceedings of the Japan Joint Automatic Control Conference, 64, 416 - 419, Japanese
- システム制御情報学会, 20 May 2020, システム制御情報学会研究発表講演会講演論文集, 64, 47 - 50, JapaneseA Proposal of Interactive Tumor Segmentation Method Considering Effects of Magnetic Field Inhomogeneity
Aegagropila linnaei are natural monuments of Japan and in danger of extinction. However, the formation of Marimos has been unresolved. For the clarification of the creation of Aegagropila linnaei, a numerical computation is one of the most powerful techniques, such as a Distinct Element Method (DEM). We attempted to estimate two significant parameters for DEM, elastic modulus and viscosity coefficients of Aegagropila linnaei by applying laboratory experiments, which revealed that two parameters are constant regardless of size and density. Furthermore, we investigated Marimos by using Magnetic Resonance Imaging, which allows non-destructive investigation of Marimos underwater. The base of Marimos is revealed to move from the outer edge to the centre of Aegagropila linnaei when they grow.
Japan Society of Civil Engineers, 2020, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 76 (2), I_1267 - I_1272, Japanese
Presentations
- 第49回日本磁気共鳴医学会大会, 10 Sep. 2021, JapaneseMR画像を用いた体位変換に伴う頭蓋内組織の変位変形可視化
Poster presentation
- 第48回日本磁気共鳴医学会 Neurofluidスタディグループ第2回会合, 07 Sep. 2020, Japanese体位によるBrain Shift と視交叉の変形の観察
[Invited]
Others
- The 41th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’19), 24 Jul. 2019, EnglishAnalysis of Brain Shift Transformation in Closed Cranium Using MR Volume Images Acquired in Different Body Positions
Poster presentation
- 第63回システム制御情報学会研究発表講演会, 24 May 2019, Japanese腹腔臓器を対象とした高速MR温度計測のための圧縮センシングを用いた画像再構成手法の検討
Oral presentation
- 第61回自動制御連合講演会, Nov. 2018, Japanese, Domestic conference高速MR温度計測のための圧縮センシングを用いた画像再構成手法の検討
Oral presentation
- Proc. of 25th International Conference on Computers in Education 2017, Dec. 2017, English, University Of Canterbury, New Zealand, International conferenceLearning Behavioral Pattern Analysis based on Students’ Logs in Reading Digital Books
Oral presentation
- the 2ndInternational Workshop on Learning Environment and Educational Technology (LEET), Nov. 2017, English, National Taiwan University of Science and Technology ,Taipei, Taiwan, National Taiwan University of Science and Technology ,Taipei, Taiwan, International conferenceExploring the Relationships between Reading Behavior Patterns and Learning Outcomes based on Log Data from e-books
Oral presentation
- 第34回日本ハイパーサーミア学会学術大会, Sep. 2017, Japanese, Domestic conference肝MRgFUSにおける3次元焦点トラッキング
[Invited]
Invited oral presentation
- 第45回日本磁気共鳴医学会大会, Sep. 2017, Japanese, Domestic conferenceThree-dimensional focus tracking based on template matching method for MRgHIFU for liver
Oral presentation
- The 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’17), Jul. 2017, English, International conferenceMR Volume Registration using Anatomical Reference Organ “Merkmal” for Analysis of the Brain Shift Transformation in the Closed Cranium
Poster presentation
- 第61 回 システム制御情報学会研究発表講演会, May 2017, Japanese, Domestic conference体位変換に伴う脳実質変位・変形解析のための解剖学的基準を用いたMRボリュームデータ位置整合
Oral presentation
- 第21回関東・全身ハイパーサーミア研究会合同学術研究会, Mar. 2017, Japanese, 東海大学校友会館, Domestic conferenceパターンマッチングを用いた肝MRgHIFUの3次元焦点追尾手法
Oral presentation
- The 2017 International Conference on Advanced Technologies Enhancing Education, Mar. 2017, English, Qingdao, China, Nowadays, it is easy to create digital books. However, through many university teachers create their own digital books as their teaching materials, it is difficult to evaluate and improve. In this paper, based on our previous research on the learning behavior analysis results, we prototype a digital book reading system and analyze the student reading logs and show how teachers, International conferenceImproving Teaching Materials through Digital Book Reading Log
Oral presentation
- IT+教育最前線2017 次世代の教育インフラ紹介セミナー, 2017, Japanese, Domestic conference神戸大学における教育研究用計算機システムの構築～教育用端末・LMSを中心に～
Public discourse
- International Conference on Computers in Education 2016 (ICCE2016), Nov. 2016, English, Mumbai, India, We currently utilize the Moodle learning management system for teachers and students who participate in the course ‘College of Liberal Arts and Sciences’ at Kobe University in Japan. Digital textbooks, reports, quizzes and questionnaires in this course were administered using Moodle. In this paper, we proposed to use quizzes to measure and evaluate those digital textbooks recor, International conferenceMeasuring & Evaluating Digital Textbooks through Quizzes
Oral presentation
- 11th Interventional MRI Symposium, Oct. 2016, English, International conferenceThree-dimensional Target Tracking Method for MRgHIFU using Image Matching Technique with Liver Deformation Volumes
Poster presentation
- 第44回日本磁気共鳴医学会大会, Sep. 2016, Japanese, 大宮ソニックシティ, Domestic conferenceThree-dimensional target tracking method for MRgHIFU using image matching technique with liver deformation volumes
Poster presentation
- The 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Aug. 2016, English, International conferenceNoninvasive Analysis of Brain Shift Transformation at Resting State Based on Magnetic Resonance Imaging
Poster presentation
- 2016 International Congress of Hyperthermic Oncology, Apr. 2016, English, International conferenceMethod of Target Tracking for HIFU using Image Matching Technique with Liver Deformation Volumes Obtained via Time-Resolved Volume Acquisitions
Oral presentation
- 産学連携フォーラム「女性研究者・技術者が輝く社会に向けて」, Feb. 2016, Japanese, 神戸市, Domestic conferenceMRガイド下集束超音波治療のための肝組織３次元動態解析
Poster presentation
- 日本脳神経外科学会第74回学術総会, Oct. 2015, Japanese, 札幌市, Domestic conference体位変換に伴う脳位置変化・変形のMRI解析
Poster presentation
- 第43回日本磁気共鳴医学会大会, Sep. 2015, English, 東京都, Domestic conference体内埋め込み型医療機器のMR 安全性 ―人体モデルに対する RF および勾配磁場の発熱シミュ レーション
Oral presentation
- 第43回日本磁気共鳴医学会大会, Sep. 2015, English, 東京都, Domestic conference腔内 RF コイルの遠隔同調・整合による動物胃潰瘍モデルの描出
Oral presentation
- 第43回日本磁気共鳴医学会大会, Sep. 2015, English, 東京都, Domestic conferenceMR 内視鏡システムのための胃腔内ナビゲーションソフトウェアにおける胃壁強調表示機能の 追加
Oral presentation
- 第32回日本ハイパーサーミア学会学術大会, Sep. 2015, Japanese, 大阪市, Domestic conferenceMRガイド下集束超音波治療のための血管分岐構造に基づく３次元肝呼吸性移動・変形解析
Oral presentation
- 第42回日本磁気共鳴医学会大会, Sep. 2014, Japanese, 京都市, Domestic conference体内埋め込み型医療機器のMR 安全性 －勾配磁場による発熱のシミュレーション－
Poster presentation
- 医生体工学シンポジウム2014, Sep. 2014, Japanese, 小金井市, Domestic conference多呼吸周期MR画像を用いた肝臓3次元動態モデルの構築
Poster presentation
- 第42回日本磁気共鳴医学会大会, Sep. 2014, Japanese, 京都市, Domestic conferenceMR 内視鏡システムにおける腔内RF コイルによる動物胃病変モデルのイメージング
Oral presentation
- 日本脳神経外科学会第73回学術総会, Sep. 2014, Japanese, 東京, Domestic conferenceMR画像に基づく安静時脳位置変化・変形の非侵襲解析
Poster presentation
- 第42回日本磁気共鳴医学会大会, Sep. 2014, Japanese, 京都市, Domestic conferenceMR ガイド下集束超音波治療のための血管分岐構造に基づく3次元肝変形解析
Oral presentation
- The 6th ACHO and the 31st JCTM, Sep. 2014, English, 福井市, International conferenceAnalysis of Respiratory-induced Deformation and Translation of Liver using Branching Structure of Portal Vein Observed by MR Imaging for HIFU
Poster presentation
- 第42回日本磁気共鳴医学会, Sep. 2013, Japanese, 日本磁気共鳴医学会, 徳島市, Domestic conferenceMR内視鏡ナビゲーションにおけるワイヤレスコントローラの利用可能性の検討
Oral presentation
- 第41回日本磁気共鳴医学会, Sep. 2013, Japanese, 日本磁気共鳴医学会, 徳島市, Domestic conferenceMR内視鏡システムにおける腔内RFコイルのリモートチューニングマッチング
Oral presentation
- 日本ハイパーサーミア学会第３０回大会, Aug. 2013, Japanese, 日本ハイパーサーミア学会, 横浜市, Domestic conferenceMRガイド下集束超音波治療における非侵襲温度モニタリング
Invited oral presentation
- The 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Jul. 2013, English, IEEE Engineering in Medicine and Biology Society, Osaka, JPN, International conferenceNavigation Technique for MR-Endoscope System Using a Wireless Accelerometer-Based Remote Control Device
Oral presentation
- The 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Jul. 2013, English, IEEE Engineering in Medicine and Biology Society, Osaka, JPN, International conferenceHigh-Resolution MR Imaging of Gastrointestinal Tissue by Intracavitary RF Coil with Remote Tuning and Matching Technique for Integrated MR-Endoscope System
Oral presentation
- ISMRM 21th Scientific Meeting, Apr. 2013, English, International Society for Magnetic Resonance in Medicine, Saltlake City, UTA, USA, International conferenceUsefulness of the WiiTM Remote Controller for Image Manipulation of MR-Endoscope System
Poster presentation
- 大学ICT推進協議会 2012年度年次大会, Dec. 2012, Japanese, 大学ICT推進協議会, 神戸市, Domestic conference全学共通教育科目「情報基礎」 のためのe-Learningシステム
Oral presentation
- 第40回日本磁気共鳴医学会, Sep. 2012, Japanese, 日本磁気共鳴医学会, 京都市, Domestic conference肝MRガイド下集束超音波治療における焦点追尾のためのステレオスコピック画像による肝組織移動・変形解析
Oral presentation
- 9th International Interventional MRI Symposium, Sep. 2012, English, University of Leipzig, Harvard Medical School, Johns Hopkins University, Boston, U.S., International conferenceThree-Dimensional Motion Analysis of Portal Vein for Focal Spot Tracking using Stereoscopic MR Images
Poster presentation
- 9th International Interventional MRI Symposium, Sep. 2012, English, University of Leipzig, Harvard Medical School, Johns Hopkins University, Boston, U.S., International conferenceNavigation for adequate MR scan with integrated MR-endoscope system using intraluminal RF coil
Poster presentation
- 第40回日本磁気共鳴医学会大会, Sep. 2012, Japanese, 日本磁気共鳴医学会, 京都市, Domestic conferenceMR内視鏡システムにおける撮像設定迅速化のためのナビゲーション
Poster presentation
- 第40回日本磁気共鳴医学会大会, Sep. 2012, Japanese, 日本磁気共鳴医学会, 京都市, Domestic conferenceMR内視鏡システムにおける画像重畳ソフトウェアの開発
Poster presentation
- The 11th International Congress of Hyperthermic Oncology (ICHO) & The 29th Japanese Congress of Thermal Medicine, Aug. 2012, English, Society for Thermal Medicine, Kyoro, JPN., International conferenceThree-Dimensional vessel tracking for liver HIFU using stereoscopic MR imaging
Poster presentation
- International Society for Magnetic Resonance in Medicine 20th Annual Meetin & Exhibition, May 2012, English, International Society for Magnetic Resonance in Medicine, Melbourne, Australia, International conferenceThree-Dimensional Focal Spot Tracking Based on Portal Vain Tree Structure
Poster presentation
- International Society for Magnetic Resonance in Medicine 20th Annual Meetin & Exhibition, May 2012, English, Society of Kobe University, Melbourne, Australia, International conferenceNavigation of Quick MR Scanning Setup with Intraluminal RF Coil for Integrated MR-Endoscope System
Poster presentation
- 大学ICT推進協議会 2011年度年次大会, Dec. 2011, Japanese, 大学ICT推進協議会, 福岡市, Domestic conference神戸大学における情報リテラシー教育の取り組み ~ 全学共通教育科目「情報基礎」 ~
Oral presentation
- 第20回日本コンピュータ外科学会大会, 22 Nov. 2011, Japanese, 日本コンピュータ外科学会, 横浜市, Domestic conference交番磁場を用いたMR内視鏡トラッキングシステムの精度検証
Oral presentation
- 第39回日本磁気共鳴医学会大会, Sep. 2011, Japanese, 日本磁気共鳴医学会, 小倉市, Domestic conference肝MRガイド下集束超音波治療における血管樹状構造に基づく三次元加温目標点追尾
Oral presentation
- ISMRM19th Scientific Meeting, May 2011, English, ISMRM, Montreal, Canada, International conferenceThree-Dimensional Motion Analysis of Hepatic Tissue for Focal Spot Tracking based on Portal Vain Structure
Oral presentation
- 第38回日本磁気共鳴医学会大会, Sep. 2010, Japanese, 日本磁気共鳴医学会, つくば市, Domestic conference肝のMRガイド下集束超音波治療のための血管樹状構造を用いた三次元目標点追尾
Oral presentation
- 8th Interventional MRI Symposium, Sep. 2010, English, University of Leipzig, Harvard Medical School, Johns Hopkins University, Leipzig Germany, International conferenceThree-dimensional motion analysis for local volume of hepatic tissue under sonication based on portal tree structure
Poster presentation
- 第38回日本磁気共鳴医学会大会, Sep. 2010, Japanese, 日本磁気共鳴医学会, つくば国際会議場, Domestic conferenceMR内視鏡システムにおける画像上の特徴点を用いた誤差の低減
Oral presentation
- 8th Interventional MRI Symposium, Sep. 2010, English, University of Leipzig, Harvard Medical School, Johns Hopkins University, Leipzig Germany, International conferenceImage-based correction of tracking sensor measurements for fusion display in MR-endoscope
Poster presentation
- 8th Interventional MRI Symposium, Sep. 2010, English, University of Leipzig, Harvard Medical School, Johns Hopkins University, Leipzig Germany, International conferenceEvaluation of vessel-based focal point tracking for focused ultrasound surgery of liver under free breathing
Oral presentation
- 8th Interventional MRI Symposium, Sep. 2010, English, University of Leipzig, Harvard Medical School, Johns Hopkins University, Leipzig Germany, International conferenceDevelopment of a visualization software for MR-endoscope tracked by a magnetic field sensor
Poster presentation
- The 54th Annual Conference of the Institute of Systems, Control and Information Engineers, 19 May 2010, Japanese, システム制御情報学会, 京都市, Domestic conference血管樹状構造に着目した肝臓の変位・変形解析
Oral presentation
- The 54th Annual Conference of the Institute of Systems, Control and Information Engineers, 19 May 2010, Japanese, システム制御情報学会, 京都市, Domestic conferenceMR-内視鏡システムにおける3次元的画像重畳手法
Oral presentation
- ISMRM18th Scientific Meeting, May 2010, English, ISMRM, Stockholm Sweden, International conferenceEsophagus Imaging with Intraluminal RF Coil for Integrated MR-Endoscope System
Poster presentation
- 第18回日本コンピュータ外科学会大会, Nov. 2009, Japanese, 日本コンピュータ外科学会, 東京大学鉄門記念講堂, Domestic conference交番磁場による誘導起電力に基づくMR内視鏡の位置・姿勢検出
Oral presentation
- 第37回日本磁気共鳴医学会大会, Oct. 2009, Japanese, 日本磁気共鳴医学会, パンパシフィック横浜ベイホテル, Domestic conferenceMR−内視鏡システムにおける画像重畳のための誤差補正手法
Poster presentation
- 第37回日本磁気共鳴医学会大会, Oct. 2009, Japanese, 日本磁気共鳴医学会, パンパシフィック横浜ベイホテル, Domestic conferenceMRガイド下集束超音波療法のための肝臓の面外変位・変形計測
Oral presentation
- 第4回肝癌治療シミュレーション研究会, Sep. 2009, Japanese, 肝癌治療シミュレーション研究会, ポートピアホテル, Domestic conference血管樹の構造情報を用いた肝臓の変位・変形計測
Oral presentation
- 日本ハイパーサーミア学会第26回大会, Sep. 2009, Japanese, ハイパーサーミア学会, 千葉大学西千葉キャンパス, Domestic conference血管の樹状構造に基づく肝臓の面外変位計測
Poster presentation
- 第53回システム制御情報学会研究発表講演会, May 2009, Japanese, システム制御情報学会, 神戸市産業振興センター, Domestic conferenceMR-内視鏡システムにおけるマーカーコイルを用い たデバイストラッキンク
Oral presentation
- ISMRM17th Scientific Meeting, Apr. 2009, English, ISMRM, Honolulu, Hawaii, USA, International conferenceThree Dimensional Targeting for Liver MRgFUS Based on Vessel Tree Tracking
Poster presentation
- ISMRM17th Scientific Meeting, Apr. 2009, English, ISMRM, Honolulu, Hawaii, USA, International conferenceFeasibility of Gd-Enhanced Lymph Node MR Imaging for the Integrated MR Endoscope System
Poster presentation
- 第17回日本コンピュータ外科学会大会, Nov. 2008, Japanese, 日本コンピュータ外科学会, Domestic conferenceワイヤレコイルマーカを用いたMR内視鏡トラッキング手法の検討
Poster presentation
- 第36回日本磁気共鳴医学会大会, Sep. 2008, Japanese, 日本磁気共鳴医学会, 旭川, Domestic conferenceMR-内視鏡システムにおける画像融合のための内視鏡先端の位置・姿勢検出
Oral presentation
- 生体医工学シンポジウム2008, Sep. 2008, Japanese, 日本生体医工学会, 大阪, Domestic conferenceMR-内視鏡システムにおける画像融合のためのデバイストラッキング
Poster presentation
- 第36回日本磁気共鳴医学会大会, Sep. 2008, Japanese, 日本磁気共鳴医学会, Domestic conferenceMRI-内視鏡融合システム腔内コイルによる胃壁および胃壁内血管イメージング
Oral presentation
- The 20th International Conference of Society for Medical Innovation and Technology, Aug. 2008, English, SMIT, International conferenceMR imaging of porcine gastric wall and vascularity in vivo by MR endoscope
Oral presentation
- The 20th International Conference of Society for Medical Innovation and Technology, Aug. 2008, English, SMIT, International conferenceDevelopment of Tracking Technique with Wireless tuned marker coils in Image Fusion for Integrated MR-Endoscope system
Oral presentation
- The 52nd Annual Conference of the Institute of Systems, Control and Information Engineers, May 2008, Japanese, システム制御情報学会, 京都市, Domestic conferenceマーカーコイルを用いたMR内視鏡の腹腔内における位置・姿勢検出法
Oral presentation
- ISMRM15th Scientific Meeting, May 2008, English, ISMRM, Tronto, International conferenceImaging of Anatomical Structure and Blood Vessels in Porcine Gastric Wall by MR Endoscope
Oral presentation
- ISMRM15th Scientific Meeting, May 2008, English, ISMRM, Tronto, International conferenceImage Fusion Techniques for Integrated MR-Endoscope System
Poster presentation
- ISMRM15th Scientific Meeting, May 2008, English, ISMRM, Tronto, International conferenceHot Spot Tracking for Focused Ultrasound Surgery of Liver Using Filtered Venography
Poster presentation
- The 1st Japan-Australia-China Forum on Health Science and Bioengineering, May 2008, English, 神戸大学, International conferenceDevelopment of Magnetic-Resonance Endoscope System
Oral presentation
- 第16回日本コンピュータ外科学会大会, Nov. 2007, Japanese, 未記入, 広島大学霞キャンパス内広仁会館・保健学科棟, Domestic conference肝臓に対するMRガイド下集束超音波療法のための照射位置推定法の検討
Oral presentation
- The 19th International Conference of Society for Medical Innovation and Techonology, Nov. 2007, English, 未記入, Sendai Excel Hotel Tokyu, JAPAN, International conferenceNewly approach to image blood vessels in gastric wall with MR endoscope system
Oral presentation
- 第16回日本コンピュータ外科学会大会, Nov. 2007, Japanese, 日本コンピュータ外科学会, 広島大学霞キャンパス内広仁会館・保健学科棟, Domestic conferenceMR-内視鏡システムにおける視野の位置・角度ならびに歪みを考慮した画像融合
Poster presentation
- The 19th International Conference of Society for Medical Innovation and Techonology, Nov. 2007, English, Sendai Excel Hotel Tokyu, JAPAN, International conferenceMotion analysis and target tracking for focused ultrasound surgery of liver using magnetic resonance filtered venography
Oral presentation
- The 19th International Conference of Society for Medical Innovation and Techonology, Nov. 2007, English, 未記入, Sendai Excel Hotel Tokyu, JAPAN, International conferenceImage fusion techniques for integrated magnetic resonance endoscope system
Oral presentation
- 第35回日本磁気共鳴医学会大会, Sep. 2007, Japanese, 未記入, 神戸ポートピアホテル, Domestic conference腹腔臓器に対するMRガイド下集束超音波治療のための照射位置推定の検討
Poster presentation
- 第35回日本磁気共鳴医学会大会, Sep. 2007, Japanese, 未記入, 神戸ポートピアホテル, Domestic conference脂質MR信号の温度依存性に関する基礎検討
Poster presentation
- 第35回日本磁気共鳴医学会大会, Sep. 2007, Japanese, 未記入, 神戸ポートピアホテル, Domestic conferenceMR-内視鏡融合システムにおける画像呈示法
Poster presentation
- 第35回日本磁気共鳴医学会大会, Sep. 2007, Japanese, 未記入, 神戸ポートピアホテル, Domestic conferenceMR内視鏡による胃壁内血管イメージングの試み
Poster presentation
- 第51回システム制御情報学会研究発表講演会, May 2007, Japanese, システム制御情報学会, 京都市, Domestic conference集束超音波治療のための磁気共鳴画像を用いた照射位置予測手法の検討
Oral presentation
- 日本教育工学会第22回全国大会, Nov. 2006, Japanese, 関西大学高槻キャンパス, Domestic conference大学入学前の情報教育に関する事前学習機会の調査 － 新旧課程履修者の比較分析－
Oral presentation
- 電気学会・産業システム情報化研究会, Nov. 2006, Japanese, 神戸大学, Domestic conference体動を考慮した温熱治療システムに関する研究
Oral presentation
- 第49回自動制御連合講演会, Nov. 2006, Japanese, システム制御情報学会, 神戸大学, Domestic conference集束超音波治療のための磁気共鳴画像による加温位置追尾手法の検討
Oral presentation
- 第49回自動制御連合講演会, Nov. 2006, Japanese, 神戸大学工学部, Domestic conference自己参照型温度分布画像化法における位相推定法の検討
Oral presentation
- 第49回自動制御連合講演会, Nov. 2006, Japanese, システム制御情報学会, 神戸大学, Domestic conference勾配磁場検出コイルを用いたMR内視鏡の位置・姿勢検出
Oral presentation
- 第15回日本コンピューター外科学会大会, Oct. 2006, Japanese, 東京慈恵医科大学, Domestic conferenceMR-内視鏡融合システムにおける画像提示法
Oral presentation
- 第15回日本コンピューター外科学会大会, Oct. 2006, Japanese, 東京慈恵医科大学, Domestic conferenceMR内視鏡を対象とした位置検出システムの開発－周辺環境などによる測定値への影響－
Oral presentation
- 第34回日本磁気共鳴医学会大会, Sep. 2006, Japanese, 日本磁気共鳴医学会, つくば国際会議場, Domestic conference血管マーカーを用いた肝臓の呼吸性移動・変形解析
Oral presentation
- 第34回日本磁気共鳴医学会, Sep. 2006, Japanese, つくば国際会議場, Domestic conferenceRF温熱治療における加温針の磁化率アーチファクト解析
Oral presentation
- 第34回日本磁気共鳴医学会, Sep. 2006, Japanese, つくば国際会議場, Domestic conferenceMR内視鏡システムのための内腔型RFコイル ―ブタ食道in vitro実験―
Poster presentation
- 第6 回日本VR 医学会学術大会, Sep. 2006, Japanese, 大阪大学中ノ島センター, Domestic conferenceMR 画像におけるAR 技術の応用とその将来像
Oral presentation
- 6th Interventional MRI Symposium, Sep. 2006, English, Leipzig, Germany, International conferenceMR-Endoscope System for Esophageal Examination – RF coil structure and Navigation
Poster presentation
- 第14回日本コンピュータ外科学会, Nov. 2005, Japanese, 海外職業訓練協会研修施設(OVTA), Domestic conferenceMR内視鏡の位置検出システムの開発
Poster presentation
- 第33回日本磁気共鳴医学会大会, Sep. 2005, Japanese, 京王プラザホテル, Domestic conferenceMRガイド下集束超音波療法のための自己参照型温度分布画像化法の最適化
Oral presentation
- 生体医工学シンポジウム2005, Sep. 2005, Japanese, 大阪大学医学部銀杏会館, Domestic conferenceMRガイド下集束超音波療法における自己参照型温度分布画像化法の適用条件最適化
Oral presentation
- SICE Annual Conference 2005 in Okayama, Aug. 2005, English, Okayama, International conferenceMagnetic Resonance Temperature Imaging for Focused Ultrasound Surgery using Self-reference Method
Oral presentation
- 第49回システム制御情報学会研究発表講演会, May 2005, Japanese, 京都テルサ, Domestic conference自己参照法を用いた３次元MR温度分布計測法
Oral presentation
- ISMRM 13tｈ Scientific Meeging and Exhibition, May 2005, English, Miami, USA, International conferenceA Polymer-absorbed Gd-DTPA Complex Marker for the Passive Catheter Tracking
Poster presentation
- 第32回日本磁気共鳴医学会大会抄録集, 2004, Japanese, 日本磁気共鳴医学会, 大津プリンスホテル, Domestic conference病変組織深達度診断のための内視鏡－MRシステム
Oral presentation
- 第13回日本コンピュータ外科学会第14回コンピュータ支援画像診断学会大会合同論文集, 2004, Japanese, 日本コンピュータ外科学会, 未記入, Domestic conference前立腺鑑別診断支援のためのMRスペクトル解析プログラムの開発
Oral presentation
- 第32回日本磁気共鳴医学会大会抄録集, 2004, Japanese, 日本磁気共鳴医学会, 大津プリンスホテル, Domestic conference自己参照型差分法を用いた温度計測の定量性
Oral presentation
- 第32回日本磁気共鳴医学会大会抄録集, 2004, Japanese, 日本磁気共鳴医学会, 大津プリンスホテル, Domestic conference傾斜磁場を用いたMR内視鏡位置姿勢検出法の基礎検討
Oral presentation
- 第32回日本磁気共鳴医学会大会抄録集, 2004, English, 日本磁気共鳴医学会, 大津プリンスホテル, Domestic conferenceSelf-referenced based MR Temperature Imaging Feedback System for liver Thermal Ablations
Oral presentation
- 日本磁気共鳴医学会雑誌, 2004, Japanese, 未記入, 未記入, Domestic conferenceGd-DTPA錯体ポリマー組成物によるIVR用MRマーカの開発
Oral presentation
- 計測自動制御学会関西支部シンポジウム, Oct. 2003, Japanese, 神戸大学医学部神緑会館, Domestic conference自己参照型差分法によるMRI温度分布計測
Oral presentation
- 第12回日本コンピュータ外科学会大会, 2003, Japanese, 日本コンピュータ外科学会, 名古屋, Domestic conference自己参照型差分法を用いたMRI温度分布計測における位相推定法の最適化
Oral presentation
- 第31回日本磁気共鳴医学会大会, 2003, Japanese, 日本磁気共鳴医学会, ホテルハイランドリゾート, Domestic conference自己参照・体動追従型温度分布計測法
Oral presentation
- 第31回日本磁気共鳴医学会大会, 2003, Japanese, 日本磁気共鳴医学会, ホテルハイランドリゾート, Domestic conferenceオープン型MRIによる内視鏡-MRI融合システムの開発
Oral presentation
- 第42回日本エム・イー学会大会, 2003, Japanese, 日本エム・イー学会, 札幌, Domestic conferenceMRガイド下IVRにおける3次元カテーテルトラッキング
Oral presentation
- 第31回日本磁気共鳴医学会大会, 2003, Japanese, 日本磁気共鳴医学会, ホテルハイランドリゾート, Domestic conferenceK-Spaceを利用したMR-IVRカテーテル抽出に関する一手法
Oral presentation
Association Memberships
Research Projects
- 学術研究助成基金助成金／基盤研究(C), Apr. 2017 - Mar. 2020, Principal investigator
Competitive research funding
- 科学研究費補助金／基盤研究(B), Apr. 2016 - Mar. 2020
Competitive research funding
- 学術研究助成基金助成金／基盤研究(C), Apr. 2015 - Mar. 2018
Competitive research funding
- 学術研究助成基金助成金／基盤研究(C), Apr. 2013 - Mar. 2016, Principal investigator
Competitive research funding
- 文部科学省, 科学研究費補助金(基盤研究(C)), 2010 - 2012, Principal investigator
本研究はこれまで比較的動きの少ない臓器に適用されてきた磁気共鳴画像化法(Magnetic Resonance Imaging, MRI)を組み合わせた集束超音波治療(Focused Ultrasound Surgery, FUS)の適用範囲を広げ,より有用な治療法としていくため,臓器の三次元的な呼吸性移動・変形に追従して集束超音波の照射位置を追尾,さらには照射位置の予測による集束超音波の照射制御手法の確立を目指すものである.今年度は特に以下の点について,検討を行った.(1)肝臓の三次元的呼吸性移動・変形の解明呼吸による肝臓の三次元的な移動・変形のパターンを抽出するために,高速撮像法であるFIESTAを用いて,健常ボランティアの肝臓を三次元撮像した.撮像は最大吸気,最大呼気およびその中間での息止めによるマルチスライス画像を取得し,肝臓の血管の三次元再構成を行い,構造解析を行って樹状構造を構築した.さらに,1周期あたり20秒程度のゆっくりとした呼吸で,1呼吸サイクルで10セット程度のマルチスライスを取得し,横隔膜の位置
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), 2007 - 2008
アスベスト肺とそれに伴う中皮腫の自動診断システムを開発した。アスベスト肺と中皮腫の高い精度での診断はかなり困難であるが、X線ヘリカルCTを用いた3次元画像情報を基に自動診断システムを作り、放射線科医や呼吸器内科医の診断の支援システムを作成した。システムについて精度を測定するためにROC解析を行い、統計的に明らかに精度が向上することが証明された。
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), 2006 - 2008
肝臓のように呼吸によって動く腹腔臓器に対する集束超音波治療とその際の非侵襲温度モニタリングを行なうために磁気共鳴画像化(MRI)を用いた方法を検討した. 肝臓門脈の断面像の変位から肝組織の動き・変形を実測し, 加温目標点を追尾する方法を提案した.複素磁気共鳴信号の位相から温度分布を求める際の, 画像引き算過程を排除した方法(自己参照法)と組み合わせ, 肝のMRIガイド下集束超音波治療の要素技術を確立した
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), 2006 - 2008, Principal investigator
MR撮像に用いられる傾斜磁場がMR装置内でほぼ線形に変化することに着目し, 治療デバイス先端に傾斜磁場による磁束の変化をとらえるコイルを配置して, リアルタイムで治療デバイスの位置・姿勢を測定するシステム, また治療デバイス先端にMR画像で高輝度となるマーカを取り付け, 多方向からのプロジェクションデータを解析することによりデバイスの位置・姿勢を検出するシステムを提案した。更に, MR装置と内視鏡を融合させたMR-内視鏡システムにおいて, これらの位置姿勢検出システムから得られた情報をもとに, 内視鏡の光学像とMR画像の重畳表示を行った.
Competitive research funding
- 科学研究費補助金／基盤研究(B), 2005
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(B)), 2003 - 2005
The research concerns to develop basic tools to construct a distributed virtual factory (DVF) for the support of strategic decision making under e- business environment and to seek the effectiveness of DVF in applying the studies of artificial market and/or virtual enterprise. The major research results are listed as follows:1.Concept and Modeling tools of DVF(1)A distributed virtual factory concept is proposed to develop a large scale manufacturing system based on distributed simulation technology. As basic tools to construct a DVF, communication interfaces for various simulation languages...
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), 2001 - 2002
In this study we investigate a manufacturing system with machining centers (MC) that can produce the variety of products with varying volume efficiently. A square arrayed layout of MCs is proposed with an auction based method for the operation as an extension of a serial-parallel layout. The given number of MCs, which is estimated for a given production plan are located on square grid points. Each MC holds toolsets for all processes of all products. An auction based method is applied to select an MC for the next processing of a pallet at the pallet changing station.By applying various bid t...
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), 1999 - 2000
We presume in this study that a virtual enterprise will be formed by selecting members applied for a supply chain of a product. We postulated two models in the below to form a VE which will be characterized by the existence of a leader in the supply chain to reach the mutual agreement or consensus.1. The consensus is attained in the negotiation process to select members from the sales agent to the agents in the market at the upstream of the supply chain.2. A leader governing the supply chain will select the members from the market.We studied mainly on the first model from the view points su...
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), 1997 - 1998
Agile manufacturing has attracted a considerable attention as a new manufacturing concept for next generation which quickly responds to a rapidly varying and personalizing demands of customers. In this study, a high volume manufacturing system for automotive industries is investigated focusing on the capability to replace and/or to supplement the mass production system in order to materialize the agile manufacturing. The system configuration of the proposed system together with its operational system was studied to clarify the characteristics and the conformity of the system to agile manufa...
Competitive research funding
- 文部科学省, 科学研究費補助金(基盤研究(C)), 1996 - 1996
本研究では,多様化,個性化する製品に対する顧客の要求に迅速に応えるための次世代の生産体制であるアジャイル生産に適合した大容量,高速のFMS(HV-FMS)を構築するために必要なシステム設計と運用の方法論について研究することを目的とした.なお,基礎研究として,自動車産業における量産設備の代替,補完性に焦点を絞り,以下の成果を得た.まず,自動車産業における量産機能としてのアジャイル性に関する基礎的考察を行い,大容量FMSの位置づけとそれに要求される基本機能について検討した.TL,FTLは計画生産能力の生産時に最高性能を発揮するが,現実の生産においては計画能力に対する生産量に過不足を生じる.また,新機種の立ち上げ時,旧機種の少量生産への対応などにも問題がある.従って,大容量FMSを以上のような問題に対する解決法の一つとして位置づけることとした.大容量・高速FMSの基本構成として,工程集約型の高速マシニングセンターを要素機械とするフレキシブルな生産システム
Competitive research funding
- Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(試験研究(B), 基盤研究(A)), 1995 - 1996
In this study, we investigate to develop a simulation-based decision support system under computer integrated manufacturing. The activities in the factory are modeled and expressed in a "virtual manufacturing system" (VMS) which is an internal model developed in a comput system. We focused to realize an autonomously distributed VMS as a distributed simulation system in this study in accord with the following considenration : the distributed information network will become an essential infrastructure in future factories, the distributed processing is effective to attain the high speed corres...
Competitive research funding
- 文部科学省, 科学研究費補助金(一般研究(B)), 1991 - 1992
平成3年度の研究をさらに発展させると共に,その成果を基礎として,以下の研究を推進し,成果を得た.1.分散型シミュレーション・システムの実験環境の整備 分散型シミュレーションに関する技術的問題とその解決法について実験的に考察するため,本研究で導入した機器を用いて分散型情報処理環境を構築し,様々なシミュレーション・システムを評価しうる環境を整えた.2.分散型シミュレーションのための同期法の検討 分散型シミュレーション・システムを構築するためには,システムを構成する各計算機の遂行するシミュレーションの進行を調整し,同期をとることが必要である.従来から提案されている同期法の適用可能性の検討を行うとともに,大規模な生産システムを取り扱うのに適した同期法について検討し,シミュレーション・システムの開発を行った.3.CIM環境を想定した実験的仮想生産システムの試作 CIMの計画段階及び運用段階における分散型シミュレーションの使用について考察
Competitive research funding
- 文部科学省, 科学研究費補助金(一般研究(C)), 1989 - 1990
生産時点情報管理(Point Of Production)は,コンピュータ統合生産(CIM)システムを効率的に運用するために重要である.より高い生産性を実現するためには,POPシステムによって得られるリアルタイム性の高い,精密な情報の利用法と,その評価法について検討を行うことが必要となる.本研究では,それらに対して次のような成果を得た.・日程計画やスケジューリングは,生産性に大きく影響する.スケジューリングに対して,POP情報の最も有効な使用法として考えられることは,工場現場の状況と計画のずれをリアルタイム的に検知し,計画に修正を加え,その新しい計画を即座に現場に伝達するというリスケジューリング機能への適用である.本研究では,POP情報を得られることを前提とした,リスケジューリングの実行タイミングの具体的な決定法を開発し,その有効性をシミュレーションにより示した.・CIMのようなシステムを評価するためには,工場内の生産性だけでなく,経済性等の面から総合的に評価する必
Competitive research funding
- Sutdy on Magnetic Resonance Temperature Imaging
Competitive research funding
- Development of MR-Endoscope system
Competitive research funding
Industrial Property Rights
文字・図形描画装置
特願平2-203984, 02 Aug. 1990, 富士ゼロックス株式会社, 特開平4-090595, 24 Mar. 1992, 特許第3018426号, 07 Jan. 2000Patent right
文字・図形描画装置
特願平2-223498, 24 Aug. 1990, 富士ゼロックス株式会社, 特開平4-104296, 06 Apr. 1992, 特許第2726951号, 12 Dec. 1997Patent right
ジエチレントリアミンペンタ酢酸錯体ポリマー組成物
特願2004-052208, 26 Feb. 2004, バンドー化学株式会社, 財団法人先端医療振興財団, 特開2005-239641, 08 Sep. 2005Patent right