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| Presentation | 2008-10-30 16:50 Optical observation of the gas-filled capsule behaviors under ultrasound irradiation -- Effect of shell on capsule behaviors -- Jun Miyabe, Kenji Yoshida (Doshisha Univ.), Daisuke Koyama (Tokyo Tech.), Yoshiaki Watanabe (Doshisha Univ.)  US2008-53 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Vibration and destruction of the gas-filled capsule was applied often in the ultrasonic diagnosis and therapy. In these techniques, the capsule behavior is so important and should be significantly affected by a mechanical characteristic of the shell. In this study, we tried to fabricate biodegradable gas-filled capsule with poly-lactic acid shell to examine relationship between the mechanical property of the shell and capsule behavior. As a result, we succeed in fabricate two types of a gas-filled capsule with poly-DL-lactic acid and poly-L-lactic acid shell, using solvent evaporation method. In addition, we observed the behavior of the fabricated capsule by high-speed video camera when the ultrasound was irradiated. We confirmed that the behavior of two capsules was clearly different. To destroy the poly-L-lactic acid capsule with higher elastic modules and tensile strength, we had to irradiate higher sound pressure than one in case of poly-DL-lactic acid capsule. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Gas-filled capsule / shell / Poly-lactic acid / Biodegradable polymer / High-speed video camera / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 266, US2008-53, pp. 23-26, Oct. 2008. | |
| Paper # | US2008-53 | |
| Date of Issue | 2008-10-23 (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 | US2008-53 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2008-10-30 - 2008-10-31 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | US |
| Conference Code | 2008-10-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical observation of the gas-filled capsule behaviors under ultrasound irradiation |
| Sub Title (in English) | Effect of shell on capsule behaviors |
| Keyword(1) | Gas-filled capsule |
| Keyword(2) | shell |
| Keyword(3) | Poly-lactic acid |
| Keyword(4) | Biodegradable polymer |
| Keyword(5) | High-speed video camera |
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| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Jun Miyabe |
| 1st Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 2nd Author's Name | Kenji Yoshida |
| 2nd Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 3rd Author's Name | Daisuke Koyama |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech.) |
| 4th Author's Name | Yoshiaki Watanabe |
| 4th Author's Affiliation | Doshisha University (Doshisha Univ.) |
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| Speaker | Author-1 |
| Date Time | 2008-10-30 16:50:00 |
| Presentation Time | 20 minutes |
| Registration for | US |
| Paper # | US2008-53 |
| Volume (vol) | vol.108 |
| Number (no) | no.266 |
| Page | pp.23-26 |
| #Pages | 4 |
| Date of Issue | 2008-10-23 (US) |
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