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Abstract #4515

Self-Supervised Learning for Perivascular Spaces segmentation with enhanced contrast knowledge

Haoyu Lan1, Arthur W. Toga1, and Jeiran Choupan1,2
1University of Southern California, Los Angeles, CA, United States, 2NeuroScope Inc., Scarsdale, NY, United States

Synopsis

Keywords: Machine Learning/Artificial Intelligence, Segmentation, self-supervised learningDue to the absence of isotropic T2w modality in clinical datasets, it is challenging to enhance the PVS contrast using multiple neuroimage modalities. To overcome this issue, in this work we introduced using self-supervised pre-trained model in the enhanced PVS contrast image space to improve the downstream model segmentation performance when solely using T1w as the training data. The experiment results showed that the proposed method increased segmentation accuracy compared to the model trained from scratch using T1w modality and resulted in faster training and less required training data volume.

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Keywords