TABLE 2

ROIs of DaT SPECT Images

ROIDetermination
ROImaxMaximum count in striatum
ROICT2, ROICT3Contour of striatum determined by CT image
ROISP2, ROISP3Contour of striatum determined by SPECT image
ROIBX2, ROIBX315 × 12 pixel rectangle
Background10 × 10 pixel rectangle on occipital lobe