3D-TDA - Topological feature extraction from 3D images for Alzheimer's disease classification

• URL: http://arxiv.org/abs/2511.08663v1
• Date: Thu, 13 Nov 2025 01:01:42 GMT
• Title: 3D-TDA - Topological feature extraction from 3D images for Alzheimer's disease classification
• Authors: Faisal Ahmed, Taymaz Akan, Fatih Gelir, Owen T. Carmichael, Elizabeth A. Disbrow, Steven A. Conrad, Mohammad A. N. Bhuiyan,
• Abstract summary: We propose a novel feature extraction method using persistent homology to analyze structural MRI of the brain.<n>This approach converts topological features into powerful feature vectors through Betti functions.<n>Our model outperforms state-of-the-art deep learning models in both binary and three-class classification tasks.
• Score: 0.8500709198102238
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Now that disease-modifying therapies for Alzheimer disease have been approved by regulatory agencies, the early, objective, and accurate clinical diagnosis of AD based on the lowest-cost measurement modalities possible has become an increasingly urgent need. In this study, we propose a novel feature extraction method using persistent homology to analyze structural MRI of the brain. This approach converts topological features into powerful feature vectors through Betti functions. By integrating these feature vectors with a simple machine learning model like XGBoost, we achieve a computationally efficient machine learning model. Our model outperforms state-of-the-art deep learning models in both binary and three-class classification tasks for ADNI 3D MRI disease diagnosis. Using 10-fold cross-validation, our model achieved an average accuracy of 97.43 percent and sensitivity of 99.09 percent for binary classification. For three-class classification, it achieved an average accuracy of 95.47 percent and sensitivity of 94.98 percent. Unlike many deep learning models, our approach does not require data augmentation or extensive preprocessing, making it particularly suitable for smaller datasets. Topological features differ significantly from those commonly extracted using convolutional filters and other deep learning machinery. Because it provides an entirely different type of information from machine learning models, it has the potential to combine topological features with other models later on.

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