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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
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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)
Download PDF 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)  
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
Date of Issue 2015-03-09 (MBE, NC) 


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