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Learning Generalized Medical Image Representations through Image-Graph Contrastive Pretraining
May 17, 2024, 4:42 a.m. | Sameer Khanna, Daniel Michael, Marinka Zitnik, Pranav Rajpurkar
cs.LG updates on arXiv.org arxiv.org
Abstract: Medical image interpretation using deep learning has shown promise but often requires extensive expert-annotated datasets. To reduce this annotation burden, we develop an Image-Graph Contrastive Learning framework that pairs chest X-rays with structured report knowledge graphs automatically extracted from radiology notes. Our approach uniquely encodes the disconnected graph components via a relational graph convolution network and transformer attention. In experiments on the CheXpert dataset, this novel graph encoding strategy enabled the framework to outperform existing …
abstract annotation arxiv cs.cv cs.lg datasets deep learning eess.iv expert framework generalized graph graphs image interpretation knowledge knowledge graphs medical notes pretraining radiology reduce report through type
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