T-map depicting differences in [11C]raclopride BP between test sessions with the phenylalanine/tyrosine-deficient vs nutritionally balanced amino-acid mixture. The t-map is superimposed on an averaged MRI. Right side on right. (a) Orthogonal projections intersecting at the peak effect in the left striatum (top). (b) Peak effect in the right striatum (bottom). Coordinates in MNI space.