Fig. 1.

Stratification of patients solely based on cardiac [¹²³I]MIBG scintigraphy. Number of RBD subjects with pathological and normal [¹²³I]MIBG uptake at baseline (n = 37) and phenoconversion rates at follow-up (n = 35) are shown. Marked is also how many subjects with abnormal cardiac [¹²³I]MIBG uptake had an abnormal [¹²³I]FP-CIT SPECT scan, and how many subjects were on antidepressants (and type of antidepressant). Of note, only subjects with both a pathological [¹²³I]MIBG scan and [¹²³I]FP-CIT-SPECT phenoconverted to PD (n = 7).