Paper Abstract and Keywords |
Presentation |
2016-06-10 13:25
Verification of accuracy on scatterer size estimation for excised rat liver Ryota Torii, Kazuki Tamura, Kenji Yoshida (Chiba Univ.), Hideyuki Hasegawa (Toyama Univ.), Tadashi Yamaguchi (Chiba Univ.) US2016-23 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Scatterer size estimation is one of quantitative ultrasonic methods for diagnosing fatty liver disease. In this method, the frequency dependence of the power spectrum of echo signals are analyzed to estimate the size of primary scatterer in the medium. Based on the measurement of reference phantom containing of glass beads with 60 m diameter, this report investigates how the estimated size of scatterer depend on the transducer specification and analysis condition for especially region of interest (ROI). Echo signals were acquired using two types of single-element focused transducers with center frequency of 15 MHz and 25 MHz. As a result, it was shown that the stable estimation could be conducted when the size of analytic region of interest was more than twice of point spread function (PSF) of ultrasonic beam for lateral direction, and 8 times wave length for axial direction. In addition, the scatterer size estimation was applied to the excised rat livers (normal model and fatty model) to clarify the problems in tissue characterization for fatty liver. Estimated scatterer size of fatty liver was 73.6 % of normal liver in 15 MHz, and 87.4 % of normal liver in 25 MHz. The estimated size was 30-50 m slightly larger than predictable scatterers such as nucleus of hepatocyte and lipid droplet. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Fatty Liver / Tissue Characterization / Scatterer Size / Reference Phantom / Sound Field / Hepatocyte Nucleus / Lipid Droplet / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 84, US2016-23, pp. 23-28, June 2016. |
Paper # |
US2016-23 |
Date of Issue |
2016-06-03 (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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US2016-23 |
Conference Information |
Committee |
US |
Conference Date |
2016-06-10 - 2016-06-10 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Gofuku Campus, University of Toyama |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Ultrasonics in Medicine, Acoustic Imaging, General |
Paper Information |
Registration To |
US |
Conference Code |
2016-06-US |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Verification of accuracy on scatterer size estimation for excised rat liver |
Sub Title (in English) |
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Keyword(1) |
Fatty Liver |
Keyword(2) |
Tissue Characterization |
Keyword(3) |
Scatterer Size |
Keyword(4) |
Reference Phantom |
Keyword(5) |
Sound Field |
Keyword(6) |
Hepatocyte Nucleus |
Keyword(7) |
Lipid Droplet |
Keyword(8) |
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1st Author's Name |
Ryota Torii |
1st Author's Affiliation |
Chiba University (Chiba Univ.) |
2nd Author's Name |
Kazuki Tamura |
2nd Author's Affiliation |
Chiba University (Chiba Univ.) |
3rd Author's Name |
Kenji Yoshida |
3rd Author's Affiliation |
Chiba University (Chiba Univ.) |
4th Author's Name |
Hideyuki Hasegawa |
4th Author's Affiliation |
Toyama University (Toyama Univ.) |
5th Author's Name |
Tadashi Yamaguchi |
5th Author's Affiliation |
Chiba University (Chiba Univ.) |
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Speaker |
Author-1 |
Date Time |
2016-06-10 13:25:00 |
Presentation Time |
25 minutes |
Registration for |
US |
Paper # |
US2016-23 |
Volume (vol) |
vol.116 |
Number (no) |
no.84 |
Page |
pp.23-28 |
#Pages |
6 |
Date of Issue |
2016-06-03 (US) |
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