Paper Abstract and Keywords |
Presentation |
2015-11-11 09:55
Evaluation of MR Elastography system with two concave drivers for high viscosity tissue Shimpei Shimazaki, Mikio Suga, Takaya Mori, Masashi Sekine (Chiba Univ.), Riwa Kishimoto, Takayuki Obata (NIRS) MI2015-58 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Magnetic resonance elastography (MRE) is a method to visualize viscoelastic modulus from shear wave images in tissue. In high-viscosity tissue, it is difficult to visualize viscoelastic modulus because of high attenuation of shear waves. The objective of this study was to evaluate MRE system with two concave drivers to enhance shear wave amplitude in deep tissue regions. Plane-shaped oscillators are used widely. To converge shear waves in a deep part of a target, a parabolic concave oscillator was developed. Using more than one oscillator together at once is expected to cause higher amplitude. In this study, we measured wave motion images of high viscosity-gel phantom by two oscillators placed oppositely both sides of the gel phantom. The results indicate that two concave oscillators will enable accurate measurement of the shear modulus in deep regions. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
MRI / Elastography / acoustic driver / multi-oscillators / viscoelastic / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 301, MI2015-58, pp. 5-8, Nov. 2015. |
Paper # |
MI2015-58 |
Date of Issue |
2015-11-04 (MI) |
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) |
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MI2015-58 |
Conference Information |
Committee |
MI |
Conference Date |
2015-11-11 - 2015-11-11 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
NAIST |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Medical Imaging in a wide sense, etc. |
Paper Information |
Registration To |
MI |
Conference Code |
2015-11-MI |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Evaluation of MR Elastography system with two concave drivers for high viscosity tissue |
Sub Title (in English) |
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Keyword(1) |
MRI |
Keyword(2) |
Elastography |
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acoustic driver |
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multi-oscillators |
Keyword(5) |
viscoelastic |
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1st Author's Name |
Shimpei Shimazaki |
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 |
Takaya Mori |
3rd Author's Affiliation |
Chiba University (Chiba Univ.) |
4th Author's Name |
Masashi Sekine |
4th Author's Affiliation |
Chiba University (Chiba Univ.) |
5th Author's Name |
Riwa Kishimoto |
5th Author's Affiliation |
National Institute of Radiological Sciences (NIRS) |
6th Author's Name |
Takayuki Obata |
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National Institute of Radiological Sciences (NIRS) |
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Speaker |
Author-1 |
Date Time |
2015-11-11 09:55:00 |
Presentation Time |
25 minutes |
Registration for |
MI |
Paper # |
MI2015-58 |
Volume (vol) |
vol.115 |
Number (no) |
no.301 |
Page |
pp.5-8 |
#Pages |
4 |
Date of Issue |
2015-11-04 (MI) |
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