Table 3 RV coefficient between pairs of individual ALS- and PP-specific pattern expression scores (averaged over ten random iterations) as determined by SVM, PCA-SVM, and PCA-LR by projecting corresponding ¹⁸F-FDG PET scans on a ALS- and PP-specific pattern respectively, combined with the Pearson correlation coefficient (r) between the individual projection scores, again averaged over ten random iterations, onto a discriminative brain pattern for ALS and PP (direct classification) for SVM, PCA-SVM, and PCA-LR. The voxelwise correlation coefficients between the ALS and PP metabolic brain patterns, determined by the different classifiers are also reported

From: Glucose metabolic brain patterns to discriminate amyotrophic lateral sclerosis from Parkinson plus syndromes