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Reference I-123 FP-CIT SPECT images for visual evaluation. I-123 FP-CIT accumulations in the striata were categorized into 5 types (0–4). Type 0 was considered normal and types 1 to 4 were abnormal. FP-CIT = N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-I-123 iodophenyl)nortropane, SPECT = single-photon emission computed tomography.
