The training of deep learning models typically requires extensive data, which are not readily available as large well-curated medical-image datasets for development of artificial intelligence (AI) models applied in Radiology. Recognizing the potential for transfer learning (TL) to allow a fully trained model from one institution to be fine-tuned by another institution using a much small local dataset, this report describes the challenges, methodology, and benefits of TL within the context of developing an AI model for a basic use-case, segmentation of Left Ventricular Myocardium (LVM) on images from 4-dimensional coronary computed tomography angiography. Ultimately, our results from comparisons of LVM segmentation predicted by a model locally trained using random initialization, versus one training-enhanced by TL, showed that a use-case model initiated by TL can be developed with sparse labels with acceptable performance. This process reduces the time required to build a new model in the clinical environment at a different institution.
@article{arxiv.2009.12437,
title = {Democratizing Artificial Intelligence in Healthcare: A Study of Model Development Across Two Institutions Incorporating Transfer Learning},
author = {Vikash Gupta1 and Holger Roth and Varun Buch3 and Marcio A. B. C. Rockenbach and Richard D White and Dong Yang and Olga Laur and Brian Ghoshhajra and Ittai Dayan and Daguang Xu and Mona G. Flores and Barbaros Selnur Erdal},
journal= {arXiv preprint arXiv:2009.12437},
year = {2020}
}