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| Presentation | 2010-08-10 13:15 Fast Ultrasonic Imaging of the Heart Using Spherically Diverging Beam Hideyuki Hasegawa, Hiroshi Kanai (Tohoku Univ.)  EA2010-54 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Ultrasonography is a valuable method for non-invasive diagnosis of living organs, such like the heart, by measuring cross-sectional images of the organs in real time. By real-time imaging of the heart, abnormal macroscopic motion and shape can be diagnosed. Furthermore, ultrasonic Doppler technique realizes quantitative measurements of blood flow and motion of the heart wall. As described above, diagnostic ultrasound significantly contribute to diagnosis of the heart. In addition to the conventional ultrasonic diagnostic techniques described above, recently it is reported that measurements of the transient of myocardial contraction and relaxation and the propagation of the heart-wall vibration caused by the closure of valves during a short period (about 10 ms) are useful for assessment of myocardial function. However, these measurements require a very high frame rate larger of several tens of Hertzes that cannot be realized by conventional ultrasonic diagnostic equipment. We have recently developed a method which realized high frame rate imaging of the heart at a frame rate of several tens of Hertzes using plane wave transmission. In this method, multiple focused receiving beams were created within each plane wave to increase the frame rate. However, the angular width of sector scanning was limited to about 40 degrees because the width of a plane wave was limited to emit ultrasonic beams from a narrow space between ribs using a narrow aperture. In this study, a full field of view of 90 degrees was obtained at a frame rate of 316 Hz using spherically diverging beams, which could be realized by a narrow aperture. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | ultrasound / spherically diverging beam / high frame rate / beamforming / echocardiogram / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 171, EA2010-54, pp. 65-68, Aug. 2010. | |
| Paper # | EA2010-54 | |
| Date of Issue | 2010-08-02 (EA) | |
| 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 | EA2010-54 |
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| Conference Information | |
| Committee | EA |
| Conference Date | 2010-08-09 - 2010-08-10 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Acoustic Signal Processing, Psychological and Physiological Acoustics, and Related Topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2010-08-EA |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fast Ultrasonic Imaging of the Heart Using Spherically Diverging Beam |
| Sub Title (in English) | |
| Keyword(1) | ultrasound |
| Keyword(2) | spherically diverging beam |
| Keyword(3) | high frame rate |
| Keyword(4) | beamforming |
| Keyword(5) | echocardiogram |
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| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hideyuki Hasegawa |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Hiroshi Kanai |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2010-08-10 13:15:00 |
| Presentation Time | 30 minutes |
| Registration for | EA |
| Paper # | EA2010-54 |
| Volume (vol) | vol.110 |
| Number (no) | no.171 |
| Page | pp.65-68 |
| #Pages | 4 |
| Date of Issue | 2010-08-02 (EA) |
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