Paper Abstract and Keywords |
Presentation |
2015-03-16 16:15
A Study on Principles of the X-ray CT using Scattered Radiation Tetsuya Nakagami, Yoichi Yamazaki, Naohiro Toda, Hiroki Yoshioka (Aichi Pref. Univ.), Shuji Koyama (Nagoya Univ.) MBE2014-127 NC2014-78 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
X-ray computed tomography (CT) is widely used in the field of medicine for diagnostic purposes, but the radiation dose to which the patient is exposed must be kept to a minimum. Grids are used to eliminate the harmful scattered radiation that occurs with current X-ray CT machines. However, because objects cause scattered radiation, information about the objects can be extracted from it. Using the Monte Carlo method to calculate the amount of scattered radiation, we constructed a maximum likelihood method to estimate its attenuation coefficient. The accuracy of the estimation was evaluated by the mean square error between the estimated value and the true value. Numerical simulation showed that the accuracy of the estimated attenuation coefficient improved without increasing the radiation exposure dose by utilizing the scattered radiation. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
X-ray Computed Tomography / scattered radiation / Monte Carlo simulation / Maximum Likelihood Method / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 514, MBE2014-127, pp. 63-68, March 2015. |
Paper # |
MBE2014-127 |
Date of Issue |
2015-03-09 (MBE, NC) |
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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MBE2014-127 NC2014-78 |
Conference Information |
Committee |
NC MBE |
Conference Date |
2015-03-16 - 2015-03-17 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tamagawa University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
ME, etc |
Paper Information |
Registration To |
MBE |
Conference Code |
2015-03-NC-MBE |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Study on Principles of the X-ray CT using Scattered Radiation |
Sub Title (in English) |
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Keyword(1) |
X-ray Computed Tomography |
Keyword(2) |
scattered radiation |
Keyword(3) |
Monte Carlo simulation |
Keyword(4) |
Maximum Likelihood Method |
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1st Author's Name |
Tetsuya Nakagami |
1st Author's Affiliation |
Aichi Prefectural University (Aichi Pref. Univ.) |
2nd Author's Name |
Yoichi Yamazaki |
2nd Author's Affiliation |
Aichi Prefectural University (Aichi Pref. Univ.) |
3rd Author's Name |
Naohiro Toda |
3rd Author's Affiliation |
Aichi Prefectural University (Aichi Pref. Univ.) |
4th Author's Name |
Hiroki Yoshioka |
4th Author's Affiliation |
Aichi Prefectural University (Aichi Pref. Univ.) |
5th Author's Name |
Shuji Koyama |
5th Author's Affiliation |
Nagoya University (Nagoya Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-03-16 16:15:00 |
Presentation Time |
25 minutes |
Registration for |
MBE |
Paper # |
MBE2014-127, NC2014-78 |
Volume (vol) |
vol.114 |
Number (no) |
no.514(MBE), no.515(NC) |
Page |
pp.63-68 |
#Pages |
6 |
Date of Issue |
2015-03-09 (MBE, NC) |
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