Segmentation results using GC-adapted-prior for a case with four probes. a: Manually labeled tumor (red) by an expert interventionalist in the baseline scan. b–f: Automatically segmented iceball (yellow contour) at 3, 6, 9, 12, and 15 min of the first freeze cycle; the tumor label is transferred and overlaid on each image, as we assume only slight misregistration occurs between these images and the baseline scan.