Fig. 6

MRFDG exhibited a better performance in distinguishing benign and malignant lesions (C, P = 0.051, effect size 0.615) than the other two measures and (A, P = 0.588, effect size 0.389 for regular static image; B, P = 0.098, effect size 0.563 for delayed image). The retention index was calculated from regular and delayed static images (D), which was also inferior to MRFDG. However, all measures could not significantly differentiate the lesion types