Paper Abstract and Keywords |
Presentation |
2020-01-23 13:35
Focal point evaluation of focused ultrasonic probe and focus position moving by edge wave Yuusuke Tanaka, Akira Abe, Yukio Ogura (Japan Probe) US2019-97 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In the focused ultrasound probe, a phenomenon occurs in which the focal point is closer to the design value. This phenomenon is considered by the overlap of the direct wave and the edge wave, and the focal point varies depending on the degree of influence. The focal point FD of only the direct wave and the focal point FE of only the edge wave were calculated, and it was found that the actual focal point was between FD and FE. When the influence of the direct wave is large, it is close to FD, and when the influence of the edge wave is large, it is close to FE. The influence of the edge wave is considered to change depending on the aperture angle, and the focus obtained from the influence of the direct wave and the edge wave is compared with the focus in the experiment. The frequency was evaluated from the propagation time difference, and the relationship between the wavelength, the response time of the signal, and the resolution was considered. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Ultrasonic / Acoustic lens / Focal point / Edge wave / Direct wave / / / |
Reference Info. |
IEICE Tech. Rep., vol. 119, no. 374, US2019-97, pp. 149-154, Jan. 2020. |
Paper # |
US2019-97 |
Date of Issue |
2020-01-15 (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) |
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US2019-97 |
Conference Information |
Committee |
EA US |
Conference Date |
2020-01-22 - 2020-01-23 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Doshisha Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
[Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonics, and Related Topics |
Paper Information |
Registration To |
US |
Conference Code |
2020-01-EA-US |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Focal point evaluation of focused ultrasonic probe and focus position moving by edge wave |
Sub Title (in English) |
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Keyword(1) |
Ultrasonic |
Keyword(2) |
Acoustic lens |
Keyword(3) |
Focal point |
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Edge wave |
Keyword(5) |
Direct wave |
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1st Author's Name |
Yuusuke Tanaka |
1st Author's Affiliation |
Japan Probe Co., Ltd. (Japan Probe) |
2nd Author's Name |
Akira Abe |
2nd Author's Affiliation |
Japan Probe Co., Ltd. (Japan Probe) |
3rd Author's Name |
Yukio Ogura |
3rd Author's Affiliation |
Japan Probe Co., Ltd. (Japan Probe) |
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Speaker |
Author-1 |
Date Time |
2020-01-23 13:35:00 |
Presentation Time |
25 minutes |
Registration for |
US |
Paper # |
US2019-97 |
Volume (vol) |
vol.119 |
Number (no) |
no.374 |
Page |
pp.149-154 |
#Pages |
6 |
Date of Issue |
2020-01-15 (US) |
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