Figure 4From: A statistical investigation of normal regional intra-subject heterogeneity of brain metabolism and perfusion by F-18 FDG and O-15 H2O PET imagingHistogram of z values of perfusion from all 24 regions in all 14 normal subjects. Note the minimal negative (leftward) skew = -0.07 and the shape also being minimally platykurtic or near-Gaussian with kurtosis = -0.06.Back to article page