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Proceedings Paper

Innovation of PACS for computer-aided diagnosis with functions to assist comparative reading for lung cancer based on multi-helical CT images
Author(s): Hitoshi Sato; Noboru Niki; Kiyoshi Mori; Kenji Eguchi; Masahiro Kaneko; Noriyuki Moriyama; Hironobu Ohmatsu; Ryutaro Kakinuma; Hideo Masuda; Suguru Machida; Michizou Sasagawa
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Paper Abstract

The development of multislice helical CT scanners that can image the lungs in a short time has created interest in the use of mass screening for lung cancer. In the mass screening process, helical CT images are acquired for the entire lung area. Therefore, mass screening based on helical CT images requires a considerable number of images to be read. It is this time-consuming step that makes the use of helical CT for mass screening impractical at present. To overcome this problem, we have developed a newly PACS for a computer-aided diagnosis (CAD) system to automatically detect suspicious regions in chest CT images that can store the huge amounts of data obtained in multi-slice CT studies and permit image comparison without films, and have developed a newly mobile CT system for CAD system. This newly developed CAD system is provided with a comparison review support function employing an automatic slice-matching algorithm that can calculate the difference in slice number between the present and past CT images. This makes it much easier to read images, since the corresponding CT slices from the present and past studies can be displayed simultaneously on the CRT monitor screen. The experimental results indicate that the CAD system can be effectively used in clinical practice to increase the speed and accuracy of routine diagnosis.

Paper Details

Date Published: 19 May 2003
PDF: 11 pages
Proc. SPIE 5033, Medical Imaging 2003: PACS and Integrated Medical Information Systems: Design and Evaluation, (19 May 2003); doi: 10.1117/12.480656
Show Author Affiliations
Hitoshi Sato, Oyama National College of Technology (Japan)
Noboru Niki, Tokushima Univ. (Japan)
Kiyoshi Mori, Tochigi Cancer Ctr. Hospital (Japan)
Kenji Eguchi, Tokai Univ. School of Medicine (Japan)
Masahiro Kaneko, National Cancer Ctr. Hospital (Japan)
Noriyuki Moriyama, National Cancer Ctr. Hospital (Japan)
Hironobu Ohmatsu, National Cancer Ctr. Hospital East (Japan)
Ryutaro Kakinuma, National Cancer Ctr. Hospital East (Japan)
Hideo Masuda, Togichi Public Health Service Association (Japan)
Suguru Machida, Togichi Public Health Service Association (Japan)
Michizou Sasagawa, Tochigi Public Health Service Association (Japan)

Published in SPIE Proceedings Vol. 5033:
Medical Imaging 2003: PACS and Integrated Medical Information Systems: Design and Evaluation
H. K. Huang; Osman M. Ratib, Editor(s)

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