Table 2 [11C]Raclopride Binding Potential Values (Mean±SD) on Test Days Following Ingestion of a Nutritionally Balanced or Phenylalanine/Tyrosine-Deficient (APTD) Amino-Acid Mixture

From: Decreasing Amphetamine-Induced Dopamine Release by Acute Phenylalanine/Tyrosine Depletion: A PET/[11C]Raclopride Study in Healthy Men

Test day t-map Ventral striatum Posterior putamen Anterior putamen Anterior caudate Posterior caudate
Balanced 1.99±0.3 1.13±0.2 1.72±0.2 1.68±0.3 1.71±0.2 0.80±0.1
APTD 2.21±0.2* 1.22±0.2* 1.81±0.2* 1.75±0.2 1.72±0.2 0.78±0.1
% Difference 11.8±11.9 8.4±21.2 5.9±9.6 4.5±9.6 0.2±6.8 −2.0±7.4
  1. t-map values are from the region delineated by t4.2.
  2. *Different from balanced mixture, p<0.05.