Fig. 1From: The metabolic spatial covariance pattern of definite idiopathic normal pressure hydrocephalus: an FDG PET study with principal components analysisSSM-PCA-based metabolic covariance pattern of iNPH as assessed in patients with definite iNPH (N = 11) versus healthy elderly controls (N = 48), superimposed on axial slices of an in-house FDG PET template in MNI space. Threshold for visualization purposes at z > 1.0 for positive weights and z <  − 1.0 for negative weights. Image depicted in radiological orientation, i.e., the left image side corresponds to the patient’s right body sideBack to article page