ASTRO's 59th Annual Meeting (image) American Society for Radiation Oncology Share Print E-Mail Caption ASTRO's 59th Annual Meeting takes place September 24-27 in San Diego. Credit American Society for Radiation Oncology (ASTRO) Usage Restrictions Image may be used with appropriate caption or credit. Share Print E-Mail 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.