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Deep learning classifier of locally advanced rectal cancer treatment response from endoscopy images

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arXiv:2405.03762v1 Announce Type: new
Abstract: We developed a deep learning classifier of rectal cancer response (tumor vs. no-tumor) to total neoadjuvant treatment (TNT) from endoscopic images acquired before, during, and following TNT. We further evaluated the network's ability in a near out-of-distribution (OOD) problem to identify local regrowth (LR) from follow-up endoscopy images acquired several months to years after completing TNT. We addressed endoscopic image variability by using optimal mass transport-based image harmonization. We evaluated multiple training regularization schemes to study the ResNet-50 network's in-distribution and near-OOD generalization ability. Test time augmentation resulted in the most considerable accuracy improvement. Image harmonization resulted in slight accuracy improvement for the near-OOD cases. Our results suggest that off-the-shelf deep learning classifiers can detect rectal cancer from endoscopic images at various stages of therapy for surveillance.

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