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| Presentation | 2021-01-29 13:50 Development of Axial Transmission technique for the evaluation of equine metacarpal bone Kazuki Miyashita, Takashi Misaki, Mineaki Takata (Doshisha Univ.), Ko Chiba (Nagasaki Univ.), Hiroshi Mita, Norihisa Tamura (JRA), Mami Matsukawa (Doshisha Univ.)  US2020-58 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Evaluation of bone inflammation is very important for racehorses. The present mainstream of bone evaluation is X-ray techniques, which however are difficult to diagnose large animals. Therefore, development of safe and inexpensive quantitative ultrasound (QUS) techniques is expected. One of the QUS methods, the Axial Transmission (AT) technique, can evaluate the cortical bone in vivo. The AT technique mostly measures the First Arriving Signal (FAS) which is a leaky longitudinal wave from the bone surface. However, FAS velocity is highly dependent on the cortical bone thickness and the surface shape. Therefore, we next focused on the shear wave. At first, an equine bone with periostitis was modeled using High Resolution-peripheral Quantitative CT (HR-pQCT) data and wave velocities in the axial direction which were measured by the ultrasonic pulse technique in the MHz range. Sound propagation in the 3D heterogeneous and anisotropic model was simulated using the elastic finite-difference time-domain (FDTD) method. The observed shear wave velocity was not strongly affected by the bone thickness and surface shape. These results show that the AT technique may be convenient for in vivo evaluation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Equine cortical bone / Shear wave velocity / AT technique / FDTD method / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 355, US2020-58, pp. 3-8, Jan. 2021. | |
| Paper # | US2020-58 | |
| Date of Issue | 2021-01-22 (US) | |
| ISSN | 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 | US2020-58 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2021-01-29 - 2021-01-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | US |
| Conference Code | 2021-01-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of Axial Transmission technique for the evaluation of equine metacarpal bone |
| Sub Title (in English) | |
| Keyword(1) | Equine cortical bone |
| Keyword(2) | Shear wave velocity |
| Keyword(3) | AT technique |
| Keyword(4) | FDTD method |
| Keyword(5) | |
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| Keyword(8) | |
| 1st Author's Name | Kazuki Miyashita |
| 1st Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 2nd Author's Name | Takashi Misaki |
| 2nd Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 3rd Author's Name | Mineaki Takata |
| 3rd Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 4th Author's Name | Ko Chiba |
| 4th Author's Affiliation | Nagasaki University (Nagasaki Univ.) |
| 5th Author's Name | Hiroshi Mita |
| 5th Author's Affiliation | JRA Equine Research Institute (JRA) |
| 6th Author's Name | Norihisa Tamura |
| 6th Author's Affiliation | JRA Equine Research Institute (JRA) |
| 7th Author's Name | Mami Matsukawa |
| 7th Author's Affiliation | Doshisha University (Doshisha Univ.) |
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| Speaker | Author-1 |
| Date Time | 2021-01-29 13:50:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2020-58 |
| Volume (vol) | vol.120 |
| Number (no) | no.355 |
| Page | pp.3-8 |
| #Pages | 6 |
| Date of Issue | 2021-01-22 (US) |
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