Marcus Randall, M.D., FASTRO (IMAGE) American Society for Radiation Oncology Caption Marcus Randall, M.D., FASTRO. Credit Marcus Randall, M.D., FASTRO Usage Restrictions Image may be used with appropriate caption or credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.