Diagnosis of Alzheimer’s Disease Based on Structural MRI Images Using a Regularized Extreme Learning Machine and PCA Features

Table 2

Feature measures and cortical feature index information.

Feature measure (fM)	Feature measure type	Indices of cortical feature
fM1	Mean cortical thickness	1–64
fM2	Surface area	65–128
fM3	Folding indices	193–256
fM4	Mean curvature indices	193–256
fM5	Volume	257–320