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Paper Abstract and Keywords
Presentation 2015-12-19 10:25
Fundamental study for optical transillumination imaging of arteriovenous fistula -- Application of point spread function to multi-layer scattering model --
Yuta Ogawa, Masataka Kitama, Hisae O.Shimizu, Masaji Yamashita, Go Okuyama, Akihiro Kikuchi, Seiji Kumazawa (HUS), Koichi Shimizu (Hokkaido Univ.) MBE2015-66
Abstract (in Japanese) (See Japanese page) 
(in English) An arteriovenous fistula is constructed in the forearm of the patient with chronic kidney failure for the hemodialysis treatment. Frequent maintenance of the fistula is essential to prevent its stenosis and occlusion. To realize a practical maintenance technique, we have developed a transillumination imaging technique to visualize the blood vessel in the fistula. The image was severely blurred due to the strong scattering in the body tissue. The deconvolution technique with a point-spread-function (PSF) is useful to suppress this scattering effect. We have used the PSF of uniform scattering medium and the scattering suppression was insufficient, so far. In this study, we newly developed a technique to apply the PSF’s layer-by-layer with different optical parameters for each layer of scattering medium. The effectiveness of the proposed technique was examined in the experiment using the model phantom that simulated the blood vessel in the fistula. The result showed better scattering suppression than the previous technique with the PSF for homogeneous scattering medium. Through this analysis, the feasibility to attain better spatial resolution in the visualization of the blood vessel structure using the proposed technique was verified.
Keyword (in Japanese) (See Japanese page) 
(in English) arteriovenous fistula / optical imaging / point spread function (PSF) / vascular access stenosis / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 383, MBE2015-66, pp. 19-23, Dec. 2015.
Paper # MBE2015-66 
Date of Issue 2015-12-12 (MBE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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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Conference Information
Committee MBE NC  
Conference Date 2015-12-19 - 2015-12-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MBE 
Conference Code 2015-12-MBE-NC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fundamental study for optical transillumination imaging of arteriovenous fistula 
Sub Title (in English) Application of point spread function to multi-layer scattering model 
Keyword(1) arteriovenous fistula  
Keyword(2) optical imaging  
Keyword(3) point spread function (PSF)  
Keyword(4) vascular access stenosis  
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1st Author's Name Yuta Ogawa  
1st Author's Affiliation Hokkaido University of Science (HUS)
2nd Author's Name Masataka Kitama  
2nd Author's Affiliation Hokkaido University of Science (HUS)
3rd Author's Name Hisae O.Shimizu  
3rd Author's Affiliation Hokkaido University of Science (HUS)
4th Author's Name Masaji Yamashita  
4th Author's Affiliation Hokkaido University of Science (HUS)
5th Author's Name Go Okuyama  
5th Author's Affiliation Hokkaido University of Science (HUS)
6th Author's Name Akihiro Kikuchi  
6th Author's Affiliation Hokkaido University of Science (HUS)
7th Author's Name Seiji Kumazawa  
7th Author's Affiliation Hokkaido University of Science (HUS)
8th Author's Name Koichi Shimizu  
8th Author's Affiliation Hokkaido University (Hokkaido Univ.)
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Speaker Author-1 
Date Time 2015-12-19 10:25:00 
Presentation Time 25 minutes 
Registration for MBE 
Paper # MBE2015-66 
Volume (vol) vol.115 
Number (no) no.383 
Page pp.19-23 
#Pages 5 
Date of Issue 2015-12-12 (MBE) 

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