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Abstract #1879

Age and gender prediction from minimally processed 3D structural brain MRI through multi-task contrastive learning

Vick Lau1,2, Christopher Man1,2, Shi Su1,2, Ye Ding1,2, Jiahao Hu1,2, Junhao Zhang1,2, Yujiao Zhao1,2, Alex T. L. Leong1,2, and Ed X. Wu1,2
1Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong SAR, China, 2Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR, China

Synopsis

Keywords: Machine Learning/Artificial Intelligence, Machine Learning/Artificial IntelligencePredicting brain age from structural MRI (sMRI) is potentially valuable as the deviation of predicted age from chronological age can be a biomarker for characterising brain health conditions. Currently, extensive pre-processing of sMRI data is required for most deep learning methods. This study presents a multi-task contrastive learning framework for simultaneous brain age prediction and gender classification from minimally processed, noisy 3D T1-weighted images. By including gender classification task and supervised contrastive learning, we demonstrate that leveraging gender information in training and better representation learning can boost age prediction accuracy for both in-domain and out-of-domain datasets.

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Keywords