Noninvasive quantification of dopamine D2 receptors with iodine-123-IBF SPECT.

Abstract

RV is preferred because it provides a theoretically valid estimate of k3/k4, independently of rCBF or CR. Alternatively, RA might be preferred to RPE because the former is simpler than the latter to implement yet the former provides a measure that equally well correlates with k3/k4.