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Paper Abstract and Keywords
Presentation 2012-02-10 17:00
A study on automated extraction of lymph nodes from two-phase 3D contrasted chest CT images
Mitsuhiro Kishimoto, Yukitaka Nimura, Masahiro Oda (Nagoya Univ.), Takayuki Kitasaka (Aichi Inst. of Tech.), Shingo Iwano, Kensaku Mori (Nagoya Univ.) PRMU2011-237 SP2011-152
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we present a method for automated extraction of lymph nodes from 3D contrasted chest CT images taken in early- and late-phases. Image diagnoses of the lymph node metastases are quite important in lung cancer treatments. Automated extraction of lymph nodes from chest CT images by computers is expected to be developed. The previous extraction methods caused a lot of FPs (false positive) due to inadequate target processing regions and insufficient FP reduction processes. We extract lymph node candidates roughly %corrected the target processing region by using the intensity features of the two-phase 3D contrasted chest CT images. We reduce FPs of the lymph node candidates based on the information of the smallest and longest axes of the candidates after processing by a region growing process. We evaluate our method using 42 cases of CT image pairs. The extraction results are compared with diagnosis results by a radiologist. Experimental results showed that the recall and precision rate of the extracted regions were 69.9 % and 58.4 %, respectively.
Keyword (in Japanese) (See Japanese page) 
(in English) Chest CT image / lymph nodes / computer assisted detection / local intensity structure analysis / region growing / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 430, PRMU2011-237, pp. 237-242, Feb. 2012.
Paper # PRMU2011-237 
Date of Issue 2012-02-02 (PRMU, SP) 
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 PRMU2011-237 SP2011-152

Conference Information
Committee PRMU SP  
Conference Date 2012-02-09 - 2012-02-10 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To PRMU 
Conference Code 2012-02-PRMU-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on automated extraction of lymph nodes from two-phase 3D contrasted chest CT images 
Sub Title (in English)  
Keyword(1) Chest CT image  
Keyword(2) lymph nodes  
Keyword(3) computer assisted detection  
Keyword(4) local intensity structure analysis  
Keyword(5) region growing  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Mitsuhiro Kishimoto  
1st Author's Affiliation Nagoya University (Nagoya Univ.)
2nd Author's Name Yukitaka Nimura  
2nd Author's Affiliation Nagoya University (Nagoya Univ.)
3rd Author's Name Masahiro Oda  
3rd Author's Affiliation Nagoya University (Nagoya Univ.)
4th Author's Name Takayuki Kitasaka  
4th Author's Affiliation Aichi Institute of Technology (Aichi Inst. of Tech.)
5th Author's Name Shingo Iwano  
5th Author's Affiliation Nagoya University (Nagoya Univ.)
6th Author's Name Kensaku Mori  
6th Author's Affiliation Nagoya University (Nagoya Univ.)
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Speaker Author-1 
Date Time 2012-02-10 17:00:00 
Presentation Time 30 minutes 
Registration for PRMU 
Paper # PRMU2011-237, SP2011-152 
Volume (vol) vol.111 
Number (no) no.430(PRMU), no.431(SP) 
Page pp.237-242 
#Pages 6 
Date of Issue 2012-02-02 (PRMU, SP) 

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