Fig. 2

The DTI-ALPS index in RCVS subjects was lower in the acute stage and continuously increased after disease onset. A In the acute stage analysis, the DTI-ALPS index was lower in the acute RCVS than in healthy controls (HCs). The box and whisker plots use horizontal lines to denote the median values, boxes to denote the interquartile ranges, and whiskers to denote the minimum and maximum values. B The time-trend analysis, using 15 days as a time segment, demonstrated that the DTI-ALPS index continuously increased after disease onset in RCVS subjects. The gray squares indicate the mean values, and the gray lines and error bars indicate the ± 95% confidence intervals. The black line connects the mean DTI-ALPS index in each time segment