1-Simulated CT images of coronavirus disease 2019 (COVID-19) on 4D extended cardiac-torso phantom developed at Duke University. Images of same phantom show simulated CT at 50 ( A), 25 ( B), and 5 ( C) mAs, as well as simulated chest radiograph ( D, blue border). Since VIT components are modeled in a modular fashion, they need to be integrated with each other to conduct a complete VIT.
