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| Presentation | 2008-08-28 14:20 A Study for Estimating Optical Parameters in Scattering Media by Utilizing Time-Resolved Diffused Optical Tomography Seiki Kawasaki, Akira Kobayasi, Tadatoshi Tanifuji (Kitami Inst. Tech.)  OFT2008-21 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Reconstructed image quality improvements of inhomogeneous scattering medium utilizing time-resolved optical tomography has been studied. Only backscattered optical pulses are used to reconstruct optical absorption coefficient images of two-dimensional scattering medium of 80×40mm2. Experimental pulses are simulated by superimposing Poisson random variables on theoretical pulse calculated by finite difference time domain (FDTD) method. Optical parameters are estimated by minimizing least mean squares of theoretical and experimental pulse amplitude utilizing conjugate gradient (CG) method. It has been become clear that estimated optical absorption coefficients accuracies are improved by expanding Yee grid increments from 2 to 4mm, which reduce the number of estimated optical parameters to one fourth. It has also been become clear that TN minimizations reconstruct highly accurate images compared with CG when source-detector separation is reduced to 8mm. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Time-resolved diffused optical tomography / Conjugate gradient method / Truncated Newton method / FDTD analysis / Optical parameters / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 190, OFT2008-21, pp. 29-32, Aug. 2008. | |
| Paper # | OFT2008-21 | |
| Date of Issue | 2008-08-21 (OFT) | |
| 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 | OFT2008-21 |
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| Conference Information | |
| Committee | OCS OFT |
| Conference Date | 2008-08-28 - 2008-08-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OFT |
| Conference Code | 2008-08-OCS-OFT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study for Estimating Optical Parameters in Scattering Media by Utilizing Time-Resolved Diffused Optical Tomography |
| Sub Title (in English) | |
| Keyword(1) | Time-resolved diffused optical tomography |
| Keyword(2) | Conjugate gradient method |
| Keyword(3) | Truncated Newton method |
| Keyword(4) | FDTD analysis |
| Keyword(5) | Optical parameters |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Seiki Kawasaki |
| 1st Author's Affiliation | Kitami Institute of Technology (Kitami Inst. Tech.) |
| 2nd Author's Name | Akira Kobayasi |
| 2nd Author's Affiliation | Kitami Institute of Technology (Kitami Inst. Tech.) |
| 3rd Author's Name | Tadatoshi Tanifuji |
| 3rd Author's Affiliation | Kitami Institute of Technology (Kitami Inst. Tech.) |
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| Speaker | Author-1 |
| Date Time | 2008-08-28 14:20:00 |
| Presentation Time | 25 minutes |
| Registration for | OFT |
| Paper # | OFT2008-21 |
| Volume (vol) | vol.108 |
| Number (no) | no.190 |
| Page | pp.29-32 |
| #Pages | 4 |
| Date of Issue | 2008-08-21 (OFT) |
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