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Paper Abstract and Keywords
Presentation 2010-01-28 17:50
Acceleration and Accuracy Evaluation of OSEM Reconstruction on the GPU
Taiga Katayama, Fumihiko Ino, Kenichi Hagihara (Osaka Univ.) MI2009-118
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a fast method for the ordered subsets-expectation maximization (OSEM) algorithm on the graphics processing unit (GPU), aiming at achieving fast PET reconstruction. The proposed method is based on the symmetry and SIMD-based projection-backprojection (SSP) algorithm, which reduces the time complexity using four geometric symmetry properties in the computation. We focus on the volume axis perpendicular to projection lines in order to realize parallel memory access suitable to the GPU. We also reduce processing workloads inside the GPU by using texture interpolation. As an experimental result, we find that exploiting two symmetry properties achieves the highest performance. This performance is 1.4 times faster than a multi-core CPU-based implementation optimized using SSE instructions. We also confirm that our method can be used in practical situations because 99\% of voxels have the same value as those obtained from the CPU-based implementation.
Keyword (in Japanese) (See Japanese page) 
(in English) OSEM / reconstruction / acceleration / GPU / PET / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 407, MI2009-118, pp. 229-234, Jan. 2010.
Paper # MI2009-118 
Date of Issue 2010-01-21 (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 MI2009-118

Conference Information
Committee MI  
Conference Date 2010-01-28 - 2010-01-29 
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 2010-01-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Acceleration and Accuracy Evaluation of OSEM Reconstruction on the GPU 
Sub Title (in English)  
Keyword(1) OSEM  
Keyword(2) reconstruction  
Keyword(3) acceleration  
Keyword(4) GPU  
Keyword(5) PET  
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1st Author's Name Taiga Katayama  
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 Kenichi Hagihara  
3rd Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2010-01-28 17:50:00 
Presentation Time 10 minutes 
Registration for MI 
Paper # MI2009-118 
Volume (vol) vol.109 
Number (no) no.407 
Page pp.229-234 
#Pages 6 
Date of Issue 2010-01-21 (MI) 

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