TABLE 1

Effect of Scatter Correction on Image ROI Data

StudyΔ (%) ROI
Striatum*Cerebellum*
ptvec4−4.7−21
darat9−3.0−7.9
darat8−5.5−15
darat7−4.3−10
darat6−4.9−16
darat5−2.7−11
darat4−2.6−11
darat3−3.2−15
darat2†−10†−12†
darat1−5.4−10
daptvec2−2.9−17

  • ↵* Sixty minutes after radiotracer injection.

  • ↵† Blocking study: 11C-raclopride coinjected with raclopride (1 mg/kg).

  • Δ = (ROIcorrected − ROIraw)/ROIraw × 100.