Fig. 4. Representative case of texture analysis predicting recurrence-free survival.

A 64-year-old female with cholangiocarcinoma showing arterial phase isoenhancement and slight hyperenhancement.

A. Axial CT image. B. Coronal CT image. C. Volumetric reconstruction. The blue area is representative of fully automatic segmentation and the yellow area is representative of semi-automatic segmentation. The mean value of texture analysis was 89.1 and 85.8 on fully automatic segmentation and semi-automatic segmentation, respectively. The mean attenuation of 89 intrahepatic mass-forming cholangiocarcinomas was 64.6–66.3 (Supplementary Table 2, 3). D. No recurrence was observed for 77.8 months after surgical resection.