Fig. 3From: Imaging modalities in differential diagnosis of Parkinson’s disease: opportunities and challengesDaT scan SPECT images from four patients. Image (a) showing normal “comma” configuration on the striata bilaterally, with a score of 0. Mild progressive loss of dopamine transporters depicted on the right (arrow) (b) score of 1, moderate on the left (arrow) on image (c) score of 2 and severe on the left (arrow) on image (d) score of 3 [96]Back to article page