Fig. 3

FDG-PET images using Vrain are shown at the top (a–c) and those using the whole-body PET are shown in the middle (d–f). Images g–i show the T1WI MRIs. The centre of each crossbar is placed on the anterior nucleus (a, d, g) or the dorsomedial nucleus (b, e, h) in the thalamus. These are clearly visualised using Vrain (a, b) but not using the whole-body PET (d, e). The substantia nigra (arrows) and red nucleus (dashed arrows) are visualised using Vrain (c) with an expanded scale for the squared area on the right, but each region is not visualised separately using the whole-body PET (f). The SUV is indicated by the colour scale