Edge Constraint and Location Mapping for Liver Tumor Segmentation from Nonenhanced Images

Figure 1

(a) Shows the nonenhanced images and enhanced images before and after contrast injection in two patients. The nonenhanced images have low contrast between the tumor region and tissues; the tumor edges are also blurred. (b) Demonstrates that there is not only diversity in morphology and size of liver tumor in the nonenhanced images but also many tumor-like tissues that are cheating.

(a)

(b)