Fast and Accurate Training of an AI Radiologist on the Zenith Supercomputer

Andrew Underwood1

1Director, HPC & AI Dell EMC


The health care industry is expected to be an early adopter of AI and deep learning to improve patient outcomes, reduce costs, and speed up diagnosis. We have developed models for using AI to diagnose pneumonia, emphysema, and other thoracic pathologies from chest x-rays. Using the Stanford University CheXNet model as inspiration, we explore ways of developing accurate models for this problem with fast parallel training on Zenith, the Intel Xeon-based supercomputer at Dell EMC’s HPC and AI Innovation Lab. We explore various network topologies to gain insight into what types of neural networks scale well in parallel and improve training time from days to hours. We then explore transferring this learned knowledge to other radiology subdomains, such as mammography, and whether this leads to better models than developing subdomain models independently.

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