@inproceedings{ccdd37edacf44826806a74d4bb3d63a7,
title = "Segmentation of liver region with tumorous tissues",
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.",
keywords = "Computer-aided diagnosis, Edge extraction, Liver, Multi-phase CT, Segmentation, Subtraction method, Tumor",
author = "Xuejun Zhang and Gobert Lee and Tetsuji Tajima and Teruhiko Kitagawa and Masayuki Kanematsu and Xiangrong Zhou and Takeshi Hara and Hiroshi Fujita and Ryujiro Yokoyama and Hiroshi Kondo and Hiroaki Hoshi and Shigeru Nawano and Kenji Shinozaki",
year = "2007",
doi = "10.1117/12.709272",
language = "English",
isbn = "0819466301",
series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",
publisher = "SPIE",
editor = "Pluim, {Josien P W} and Reinhardt, {Joseph M}",
booktitle = "Medical Imaging 2007",
address = "United States",
note = "Medical Imaging 2007: Image Processing ; Conference date: 18-02-2007 Through 20-02-2007",
}