Supervised classification using deformation-based features for Alzheimer's disease detection on the OASIS cross-sectional database

In the last 10 years, detection of Alzheimer's disease based on brain T1-weighted Magnetic Resonance Imaging (MRI) have been a highly sought goal in the neuroscienti c community. However, the methods were assessed on di erent datasets and not always publicly available ones making reproducibility and validation impossible. Here, we evaluated ve deformation-based features (Jacobian determinant and trace, modulated grey matter (GM), deformation vector norm and geodesic anisotropy) and three feature selection processes (Pearson correlation, Bhattacharyya distance and Welch's t-test) using the 416 subjects (316 controls and 100 patients) from the OASIS database. Our objective was to correctly discriminate between controls (CN) and Alzheimer's disease patients (AD). For this task we used a fully and non-fully independent strati ed 10-fold cross-validation and linear SVM. Our best mean detection result was 79.43% of precision, 96.67% of sensitivity and 97.37 of area under the ROC curve. We also show discriminant voxel site locations found with each measure.

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