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| Presentation | 2008-09-25 14:20 Development of Magnetic Resonance Elastography System to Observe Deep -- Improvement of Longitudinal Driver and Pulse Sequence -- Takashi Tanaka, Mikio Suga (Chiba Univ), Masaya Hirano (GEYMS), Hisayuki Miura (Chiba Univ), Hiroo Ikehira, Takayuki Obata (NIRS)  MBE2008-49 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The mechanical property of biological tissues is an important index for the diagnosis of organ dysfunction and diseases. Magnetic Resonance Elastography (MRE) is based on a phase-contrast MRI imaging technique. Mechanical waves can be visualized and shear modulus is measured in tissue applied to harmonic mechanical excitation. We have been using a transverse driver which generates shear waves at the object surface and gradient-echo (GRE) based MRE sequence. The problems of the MRE system is that shear waves rapidly attenuate at the surface of tissue. And GRE-MRE sequence needs long scan-time. In this study, we develop longitudinal driver and spin-echo EPI based MRE sequence. The longitudinal driver was found to induce shear waves inside the kidney. The scan time of SE-EPI MRE sequence is 6.4 times faster than the GRE-MRE sequence. These results suggest that the longitudinal driver with SE-EPI MRE sequence will suitable for in-vivo study. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | magnetic resonance elastography / MRE / MRI / pulse sequence / viscoelasticity / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 219, MBE2008-49, pp. 123-126, Sept. 2008. | |
| Paper # | MBE2008-49 | |
| Date of Issue | 2008-09-18 (MBE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | MBE2008-49 |
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| Conference Information | |
| Committee | MBE |
| Conference Date | 2008-09-25 - 2008-09-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Faculty of Engineering, Shinshu University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ME in general |
| Paper Information | |
| Registration To | MBE |
| Conference Code | 2008-09-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of Magnetic Resonance Elastography System to Observe Deep |
| Sub Title (in English) | Improvement of Longitudinal Driver and Pulse Sequence |
| Keyword(1) | magnetic resonance elastography |
| Keyword(2) | MRE |
| Keyword(3) | MRI |
| Keyword(4) | pulse sequence |
| Keyword(5) | viscoelasticity |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takashi Tanaka |
| 1st Author's Affiliation | Chiba University (Chiba Univ) |
| 2nd Author's Name | Mikio Suga |
| 2nd Author's Affiliation | Chiba University (Chiba Univ) |
| 3rd Author's Name | Masaya Hirano |
| 3rd Author's Affiliation | GE Yokokawa Medical System (GEYMS) |
| 4th Author's Name | Hisayuki Miura |
| 4th Author's Affiliation | Chiba University (Chiba Univ) |
| 5th Author's Name | Hiroo Ikehira |
| 5th Author's Affiliation | National Institute of Radiological Sciences (NIRS) |
| 6th Author's Name | Takayuki Obata |
| 6th Author's Affiliation | National Institute of Radiological Sciences (NIRS) |
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| Speaker | Author-1 |
| Date Time | 2008-09-25 14:20:00 |
| Presentation Time | 25 minutes |
| Registration for | MBE |
| Paper # | MBE2008-49 |
| Volume (vol) | vol.108 |
| Number (no) | no.219 |
| Page | pp.123-126 |
| #Pages | 4 |
| Date of Issue | 2008-09-18 (MBE) |
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