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Paper Abstract and Keywords
Presentation 2012-10-29 10:15
Noise reduction method for coronary CT using padding images
Toru Higaki, Fuminari Tatsugami, Kazuo Awai (Hiroshima Univ.) MI2012-51
Abstract (in Japanese) (See Japanese page) 
(in English) When we obtain a coronary CT image, some devices are necessary to reduce blurs due to cardiac pulsation. In general, a coronary CT image is scanned at mid-diastolic phase during cardiac phase using an ECG gating. As the best phase for diagnosis is different with each person, temporarily abundant scan data called “padding” are usually acquired. A final image for diagnosis is reconstructed by selecting the best temporal data during the “padding”. In this research, we propose a noise reduction method for coronary CT images using images reconstructed from unused padding data.
In our method, we reduce noises by averaging some images reconstructed from unused padding data. We avoid image blurring by applying image registration technique before the averaging. Our new technique achieved 18% reduction of image noise in an experiment using pulsated phantom at 40 bpm of heart rate; it might reduce 27% of X-ray tube current. We concluded that our new methods could reduce image noise without sacrificing anatomical details in cardiac CT imaging.
Keyword (in Japanese) (See Japanese page) 
(in English) Coronary CT / Noise reduction / Padding images / Temporal filtering / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 271, MI2012-51, pp. 23-28, Oct. 2012.
Paper # MI2012-51 
Date of Issue 2012-10-22 (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 2012-10-29 - 2012-10-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaguchi Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Biomedical Engineering and Medical Image Processing 
Paper Information
Registration To MI 
Conference Code 2012-10-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Noise reduction method for coronary CT using padding images 
Sub Title (in English)  
Keyword(1) Coronary CT  
Keyword(2) Noise reduction  
Keyword(3) Padding images  
Keyword(4) Temporal filtering  
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1st Author's Name Toru Higaki  
1st Author's Affiliation Hiroshima University (Hiroshima Univ.)
2nd Author's Name Fuminari Tatsugami  
2nd Author's Affiliation Hiroshima University (Hiroshima Univ.)
3rd Author's Name Kazuo Awai  
3rd Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2012-10-29 10:15:00 
Presentation Time 15 minutes 
Registration for MI 
Paper # MI2012-51 
Volume (vol) vol.112 
Number (no) no.271 
Page pp.23-28 
#Pages 6 
Date of Issue 2012-10-22 (MI) 

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