Table 1: The tracer used for SPECT in Parkinson’s disease.

Biological variableRadiotracer

Dopamine reuptake (dopamine transport)123I-β-CIT,
123I-FP-β-CIT,
123I-IPT (presynaptic dopamine transporter),
123I-Altropane,
123I-β-PE2I
99Tcm-TRODAT-1

D2 dopamine receptor123I-Iodospiperone,
123I-Iodobenzamide (123I-IBZM), (postsynaptic dopamine D2 receptor)
123I-Iodolisuride, 123I-IBF,
123I-Epidepride (extrastriatal DA receptors)