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Paper Abstract and Keywords
Presentation 2016-01-19 13:20
Source Localization in Remote After Loading System Using CT Image and Radiograph
Yuki Miyajima, Takayuki Kanai, Koji Suzuki (yamagata univ.), Satoshi Saito (Toshiba medical systems), Tetsuya Yuasa, Kenji Nemoto (yamagata univ.) MI2015-87
Abstract (in Japanese) (See Japanese page) 
(in English) RALS (Remote After Loading System) which is a kind of radiation therapy are widely applied to the treatment for cervical cancer. In RALS, first a pipe called an applicator is inserted along the cavity within a tubular organ such as esoghagus and uterus from outside a body so that its head is positioned on the tumor region, and then a wire with a radiation source mounted on its tip is inserted through the applicator to irradiate the tumor region. If the wire tip is positioned away from the tumor region, the normal tissues are damaged by radiation. In this study, in order to avoid the risk, we considered a method to estimate the irradiation position using a preoperatively acquired computed tomography (CT) image for radiation treatment planning and an intraoperatively acquired radiograph. We registered the projection image generated from the CT image with the actual radiograph based on the position of Pb markers using a rigid body transformation to estimate the difference between planned source position and actual source position. We demonstrated the efficacy using simulated images generated form an actual clinical CT and actual images acquired from a physical phantom.
Keyword (in Japanese) (See Japanese page) 
(in English) remote afterloading system(RALS) / computed tomography(CT) / radiograph / registration / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 401, MI2015-87, pp. 75-80, Jan. 2016.
Paper # MI2015-87 
Date of Issue 2016-01-12 (MI) 
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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Conference Information
Committee MI  
Conference Date 2016-01-19 - 2016-01-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Bunka Tenbusu Kan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General topics in medical imaging 
Paper Information
Registration To MI 
Conference Code 2016-01-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Source Localization in Remote After Loading System Using CT Image and Radiograph 
Sub Title (in English)  
Keyword(1) remote afterloading system(RALS)  
Keyword(2) computed tomography(CT)  
Keyword(3) radiograph  
Keyword(4) registration  
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Keyword(6)  
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1st Author's Name Yuki Miyajima  
1st Author's Affiliation yamagata university (yamagata univ.)
2nd Author's Name Takayuki Kanai  
2nd Author's Affiliation yamagata university (yamagata univ.)
3rd Author's Name Koji Suzuki  
3rd Author's Affiliation yamagata university (yamagata univ.)
4th Author's Name Satoshi Saito  
4th Author's Affiliation Toshiba medical systems corporation (Toshiba medical systems)
5th Author's Name Tetsuya Yuasa  
5th Author's Affiliation yamagata university (yamagata univ.)
6th Author's Name Kenji Nemoto  
6th Author's Affiliation yamagata university (yamagata univ.)
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Speaker Author-1 
Date Time 2016-01-19 13:20:00 
Presentation Time 40 minutes 
Registration for MI 
Paper # MI2015-87 
Volume (vol) vol.115 
Number (no) no.401 
Page pp.75-80 
#Pages 6 
Date of Issue 2016-01-12 (MI) 

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