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Proceedings Paper

Segmentation of liver region with tumorous tissues
Author(s): Xuejun Zhang; Gobert Lee; Tetsuji Tajima; Teruhiko Kitagawa; Masayuki Kanematsu; Xiangrong Zhou; Takeshi Hara; Hiroshi Fujita; Ryujiro Yokoyama; Hiroshi Kondo; Hiroaki Hoshi; Shigeru Nawano; Kenji Shinozaki
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Paper Abstract

Segmentation of an abnormal liver region based on CT or MR images is a crucial step in surgical planning. However, precisely carrying out this step remains a challenge due to either connectivities of the liver to other organs or the shape, internal texture, and homogeneity of liver that maybe extensively affected in case of liver diseases. Here, we propose a non-density based method for extracting the liver region containing tumor tissues by edge detection processing. False extracted regions are eliminated by a shape analysis method and thresholding processing. If the multi-phased images are available then the overall outcome of segmentation can be improved by subtracting two phase images, and the connectivities can be further eliminated by referring to the intensity on another phase image. Within an edge liver map, tumor candidates are identified by their different gray values relative to the liver. After elimination of the small and nonspherical over-extracted regions, the final liver region integrates the tumor region with the liver tissue. In our experiment, 40 cases of MDCT images were used and the result showed that our fully automatic method for the segmentation of liver region is effective and robust despite the presence of hepatic tumors within the liver.

Paper Details

Date Published: 5 March 2007
PDF: 9 pages
Proc. SPIE 6512, Medical Imaging 2007: Image Processing, 651235 (5 March 2007); doi: 10.1117/12.709272
Show Author Affiliations
Xuejun Zhang, Gifu Univ. (Japan)
Guangxi Univ. (China)
Gobert Lee, Gifu Univ. (Japan)
Tetsuji Tajima, Gifu Univ. (Japan)
Teruhiko Kitagawa, Gifu Univ. (Japan)
Masayuki Kanematsu, Gifu Univ. School of Medicine and Univ. Hospital (Japan)
Xiangrong Zhou, Gifu Univ. (Japan)
Takeshi Hara, Gifu Univ. (Japan)
Hiroshi Fujita, Gifu Univ. (Japan)
Ryujiro Yokoyama, Gifu Univ. School of Medicine and Univ. Hospital (Japan)
Hiroshi Kondo, Gifu Univ. School of Medicine and Univ. Hospital (Japan)
Hiroaki Hoshi, Gifu Univ. School of Medicine and Univ. Hospital (Japan)
Shigeru Nawano, National Cancer Ctr. Hospital East (Japan)
Kenji Shinozaki, National Kyushu Cancer Ctr. (Japan)

Published in SPIE Proceedings Vol. 6512:
Medical Imaging 2007: Image Processing
Josien P. W. Pluim; Joseph M. Reinhardt, Editor(s)

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