Fig. 3

Comparison of image features between cholangiocarcinoma and PAC. Two-sided Mann–Whitney U test was performed for each feature, and 108 out of 150 features showed significant differences between cholangiocarcinoma and PAC after multiple comparison correction using false discovery rate procedure at a 5% level of significance (i.e., q value < 0.05). The fold change for each feature was defined as the ratio of the median feature value between the two groups (cholangiocarcinoma/PAC). CHOL, cholangiocarcinoma; PAC, pancreatic adenocarcinoma