The average grading maps for each patient group. For each subject, 682 grading features were extracted, including 138 SMC grading features (the first column), 138 AD grading features (the second column), 138 FTLD grading features (the third column), 138 DLB grading features (the fourth column) and 130 VaD grading features (the fifth column). The VaD grading features were extracted in the white matter subregions using FLAIR images. The other grading features were extracted in the grey matter subregions using T1-weighted images.