FIG 4. Bar graph of the signal intensity ratios on the ADC maps. Compared with the baseline value at 30 minutes, the ratios in types 1 and type 2 lesions did not change significantly at 2 hours in either group (P > .485). With the type 1 lesions, the ratios in group 2 were significantly lower than those in group 1 at each time point (P = .027). However, in type 2 lesions, the ratios were not significantly different in either group (P > .144).