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| Presentation | 2009-06-26 13:00 Quantitative imaging of the tissue attenuation -- suppression of nonlinear propagation effect -- Yuko Kanayama, Naohisa Kamiyama, Tetsuya Yoshida, Yoko Okamura (Toshiba Medical Systems Corp.)  US2009-13 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Ultrasonography today can provide images with uniform brightness at any depth, while the amount of ultrasonic attenuation could be a helpful indicator of some diseases. The amount of ultrasonic attenuation is known to increase linearly with frequency, so we can estimate it by getting the ratio of received signals at two different frequencies. However, 2nd harmonic signals due to nonlinear propagation effects would reduce the accuracy of the attenuation value. In order to suppress the 2nd harmonic signals, two identical pulses with inverted phase were transmitted and the two received signals were subtracted. This process makes it possible to exclude the nonlinear effect, which results in estimating attenuation value with improving accuracy. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Attenuation / Quantification / Nonlinear Effect / Harmonic signal / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 107, US2009-13, pp. 1-5, June 2009. | |
| Paper # | US2009-13 | |
| Date of Issue | 2009-06-19 (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 | US2009-13 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2009-06-26 - 2009-06-26 |
| 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 | 2009-06-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Quantitative imaging of the tissue attenuation |
| Sub Title (in English) | suppression of nonlinear propagation effect |
| Keyword(1) | Attenuation |
| Keyword(2) | Quantification |
| Keyword(3) | Nonlinear Effect |
| Keyword(4) | Harmonic signal |
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| 1st Author's Name | Yuko Kanayama |
| 1st Author's Affiliation | Toshiba Medical Systems Corporation (Toshiba Medical Systems Corp.) |
| 2nd Author's Name | Naohisa Kamiyama |
| 2nd Author's Affiliation | Toshiba Medical Systems Corporation (Toshiba Medical Systems Corp.) |
| 3rd Author's Name | Tetsuya Yoshida |
| 3rd Author's Affiliation | Toshiba Medical Systems Corporation (Toshiba Medical Systems Corp.) |
| 4th Author's Name | Yoko Okamura |
| 4th Author's Affiliation | Toshiba Medical Systems Corporation (Toshiba Medical Systems Corp.) |
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| Speaker | Author-1 |
| Date Time | 2009-06-26 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2009-13 |
| Volume (vol) | vol.109 |
| Number (no) | no.107 |
| Page | pp.1-5 |
| #Pages | 5 |
| Date of Issue | 2009-06-19 (US) |
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