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| Presentation | 2013-06-21 13:55 Improvement of image subtraction Schlieren system and visualization of diagnostic ultrasound fields Daiki Sekine, Nobuki Kudo, Koichi Shimizu (Hokkaido Univ.)  MBE2013-22 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We have proposed a novel technique for acquiring Schlieren-like images of ultrasound fields using a simple optics. This technique takes two shadowgraphs with and without ultrasound exposure and visualizes an acoustic field by subtraction of the images. In this study, a Schlieren system was improved to visualize diagnostic ultrasound fields. A pressure sensor that receives ultrasound pulses was added to the system, and the detected signal was used for a timing signal to visualize instantaneous fields of propagating ultrasound. Various diagnostic ultrasound fields were visualized, such as the propagating fields from near-field to focal regions, and the fields in M mode and pulse Doppler mode. In these results, the importance of the proposed method for evaluation of aged deterioration and malfunction of a diagnostic ultrasound probe was confirmed. The relation between pressure and image brightness was investigated, and a good correlation was found between the pulse-averaged square values of the pressure and brightness. This suggests the usefulness of this method for the determination of output intensities of diagnostic ultrasound equipment. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | ultrasound field / visualization / Schlieren / shadowgraph / ultrasound diagnostic equipment / pulsed ultrasound / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 103, MBE2013-22, pp. 39-44, June 2013. | |
| Paper # | MBE2013-22 | |
| Date of Issue | 2013-06-14 (MBE) | |
| 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 | MBE2013-22 |
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| Conference Information | |
| Committee | MBE |
| Conference Date | 2013-06-21 - 2013-06-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | MBE |
| Conference Code | 2013-06-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvement of image subtraction Schlieren system and visualization of diagnostic ultrasound fields |
| Sub Title (in English) | |
| Keyword(1) | ultrasound field |
| Keyword(2) | visualization |
| Keyword(3) | Schlieren |
| Keyword(4) | shadowgraph |
| Keyword(5) | ultrasound diagnostic equipment |
| Keyword(6) | pulsed ultrasound |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Daiki Sekine |
| 1st Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 2nd Author's Name | Nobuki Kudo |
| 2nd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 3rd Author's Name | Koichi Shimizu |
| 3rd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
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| Speaker | Author-1 |
| Date Time | 2013-06-21 13:55:00 |
| Presentation Time | 25 minutes |
| Registration for | MBE |
| Paper # | MBE2013-22 |
| Volume (vol) | vol.113 |
| Number (no) | no.103 |
| Page | pp.39-44 |
| #Pages | 6 |
| Date of Issue | 2013-06-14 (MBE) |
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