Keywords: Analysis/Processing, Alzheimer's Disease, Multi-center structural MRI; Data heterogeneity; Disentangling learning; Homogeneous features
Motivation: Variations in imaging conditions across centers challenge accurate diagnosis of Alzheimer’s Disease (AD) and Mild Cognitive Impairment (MCI) using structural MRI (sMRI).
Goal(s): Develop a robust and scalable model that accurately classifies AD, MCI, and normal controls (NC) across multi-center sMRI datasets without re-training on new data.
Approach: This study presents "HomoNet", a model employing weakly-supervised disentangling learning to separate homogeneous (center-invariant) and heterogeneous (center-specific) features.
Results: HomoNet outperforms current methods, achieving 74.37% accuracy in distinguish NC, MCI, and AD on an external dataset, enhancing diagnostic robustness across diverse multi-center MRI data.
Impact: HomoNet enhances multi-center sMRI image classification, improving diagnostic accuracy for AD and MCI. It effectively addresses data heterogeneity, increases model generalizability, and provides a scalable, re-training-free solution, making it highly applicable for real-world clinical imaging.
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