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| Presentation | 2013-07-29 09:10 Temperature dependence of complex shear modulus in porcine liver Pak-Kon Choi, Yamato Nomura (Meiji Univ.)  US2013-31 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Elasticity is an important parameter in medical diagnosis. The values of shear modulus in soft tissues are required especially at high temperatures, which provide fundamental data for monitoring temperature of ablated tissues in HIFU or radio-frequency ablation method. We measured surface-wave velocity and absorption in the frequency range of 200-500 Hz in porcine liver at temperatures of 21, 37, 49 and 59 ºC. Shear elasticity (real part of shear modulus) and shear viscosity were obtained from the frequency dependences of the velocity and absorption on the basis of the viscoelastic Voigt model. The values of shear elasticity and viscosity obtained are 1.4 - 6 kPa, 2.5 - 24 Pa・s, respectively. These values increase rapidly above 50 ºC, which may be caused by collagen denaturation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | surface elastic waves / porcine liver / shear elasticity / shear viscosity / temperature dependence / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 167, US2013-31, pp. 47-50, July 2013. | |
| Paper # | US2013-31 | |
| Date of Issue | 2013-07-22 (US) | |
| 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 | US2013-31 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2013-07-29 - 2013-07-30 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Chikushi Campus, Kyushu University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Material Proparty, General |
| Paper Information | |
| Registration To | US |
| Conference Code | 2013-07-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Temperature dependence of complex shear modulus in porcine liver |
| Sub Title (in English) | |
| Keyword(1) | surface elastic waves |
| Keyword(2) | porcine liver |
| Keyword(3) | shear elasticity |
| Keyword(4) | shear viscosity |
| Keyword(5) | temperature dependence |
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| Keyword(8) | |
| 1st Author's Name | Pak-Kon Choi |
| 1st Author's Affiliation | Meiji University (Meiji Univ.) |
| 2nd Author's Name | Yamato Nomura |
| 2nd Author's Affiliation | Meiji University (Meiji Univ.) |
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| Speaker | Author-1 |
| Date Time | 2013-07-29 09:10:00 |
| Presentation Time | 20 minutes |
| Registration for | US |
| Paper # | US2013-31 |
| Volume (vol) | vol.113 |
| Number (no) | no.167 |
| Page | pp.47-50 |
| #Pages | 4 |
| Date of Issue | 2013-07-22 (US) |
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