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Paper Abstract and Keywords
Presentation 2008-01-25 16:25
Performance Evaluation and Accuracy Verification of GPU-Accelerated Cone Beam Reconstruction
Seiji Yoshida, Fumihiko Ino (Osaka Univ.), Kazuyoshi Nishino (Shimadzu), Kenichi Hagihara (Osaka Univ.) MI2007-104
Abstract (in Japanese) (See Japanese page) 
(in English) Generally, cone beam X-ray CT (computed tomography) scans are required to reconstruct a volume in a short time, because they are usually used during a surgery. This paper presents a GPU-accelerated volume reconstruction method for cone beam CT scans, and also shows verification results in terms of computational accuracy. Our method has a vectorization scheme that realizes fast reconstruction by reducing the number of rendering passes, namely the number of loops in the GPU. As a result, the proposed method takes 7.5 seconds to reconstruct a $512^3$ voxel volume from 308 $512^2$-pixel projection images. This execution time is equivalent to a 15-fold speedup over a CPU implementation, showing competitive results as compared with a previous method that restricts a condition of taking projection images. With respect to the accuracy, our GPU-based method can not reconstruct volumes identical to those generated by the CPU method, because the GPU does not provide the same accuracy as the CPU. However, we found that this problem is not critical in practical situations, because there are no visible differences in visualization results.
Keyword (in Japanese) (See Japanese page) 
(in English) Cone beam CT / Reconstruction / Backprojection / Acceleration / GPU / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 461, MI2007-104, pp. 219-226, Jan. 2008.
Paper # MI2007-104 
Date of Issue 2008-01-18 (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)
Download PDF MI2007-104

Conference Information
Committee MI  
Conference Date 2008-01-25 - 2008-01-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Naha-Bunka-Tenbusu 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Medical Imaging 
Paper Information
Registration To MI 
Conference Code 2008-01-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Evaluation and Accuracy Verification of GPU-Accelerated Cone Beam Reconstruction 
Sub Title (in English)  
Keyword(1) Cone beam CT  
Keyword(2) Reconstruction  
Keyword(3) Backprojection  
Keyword(4) Acceleration  
Keyword(5) GPU  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Seiji Yoshida  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Fumihiko Ino  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Kazuyoshi Nishino  
3rd Author's Affiliation Shimadzu Corporation (Shimadzu)
4th Author's Name Kenichi Hagihara  
4th Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2008-01-25 16:25:00 
Presentation Time 10 minutes 
Registration for MI 
Paper # MI2007-104 
Volume (vol) vol.107 
Number (no) no.461 
Page pp.219-226 
#Pages 8 
Date of Issue 2008-01-18 (MI) 

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