Fig. 2

Box plots showing the changes of DAT binding (ΔDAT-binding) of CAU_L (a), CAU_R (b), PUT_Ant_L (c), PUT_Ant_R (d), PUT_Post_L (e) and PUT_Post_R (f) compared with the G900 images (*P < 0.05). ΔDAT-binding was calculated by subtracting DAT binding of G720 to G30 from G900 for each patient. The difference of ΔDAT-binding was analyzed using G720 as reference. CAU, caudate nucleus; PUT, putamen; Ant, anterior; Post, posterior; L, left; R, right