Relationship between [11C]raclopride D2/3DR BPND in COBRA and receptor density (Bmax) in post-mortem brains as reported by Hall et al. (1994) across extrastriatal regions of interest (a) and including the striatum and globus pallidus (b). Relationship between [11C]raclopride D2/3DR BPND in COBRA and BPND based on [18F]fallypride (Seaman et al. 2019) across extrastriatal regions of interest (c) and including the striatum and globus pallidus (d). FC frontal cortex (Hall superior, medial, orbital in a and b, Seaman middle, superior, and inferior frontal gyrus, in c and d, COBRA superior frontal gyrus, rostral middle-frontal gyrus, medial orbital frontal cortex in a and b and superior frontal and rostral middle-frontal gyrus in c and d), TC temporal cortex (Hall superior and middle-temporal cortex in a and b, Seaman superior, middle, and inferior temporal gyrus in c and d, COBRA superior and middle-temporal gyrus); EC entorhinal cortex, CC corpus callosum, ACC anterior cingulate cortex, OFC orbitofrontal cortex (Seaman, anterior, medial, lateral, and posterior orbital gyrus, COBRA medial orbital frontal cortex), PCC posterior cingulate cortex, Hc hippocampus, PHc parahippocampus, Amy amygdala, Pt putamen, Cd caudate, NAc nucleus accumbens, GP globus pallidus, TH thalamus