关键词: 图像处理, 血管分割, 区域生长, 形态学运算, 手术模拟

Abstract: The algorithm for liver vessel segmentation is proposed by using the two-stage region growing. In the first stage, the 3D region growing constrained by intensity and variance is performed to isolate liver from CT sequence. Then the following morphologic operations and median filter are employed to eliminate noise. In the second stage, another region growing restricted with intensity is used to extract vessels from the resulted 3D liver data. Compared to single region growing, the experimental results of 3D reconstruction by the method depict the accuracy of the proposed algorithm.

Key words: image processing, vessel segmentation, region growing, morphologic operation, surgical simulation