Fig. 4

Prediction of disease conversion with baseline DLB-pattern, mean cortical thickness and DAT availability. a Kaplan–Meier plot for overall disease conversion in iRBD patients with DLB-pattern [green: high z-score(> 1); blue: low z-score(< 1)]. b Kaplan–Meier plot for overall disease conversion in iRBD with the mean cortical thickness [green: low z-score(< 0); blue: high z-score(> 0)]. c Kaplan–Meier plot for overall disease conversion in iRBD with decreased DAT-SUVR (age-normative value of posterior putamen < 0.65). SUVR: Standardized uptake value ratio, DLB: Dementia with Lewy bodies, DAT: Dopamine transporter