Dr Feygelman earned his PhD in Physical Chemistry in the former USSR and was active in the field of Photochemistry. He is currently an Associate Member of the Department of Radiation Oncology at Moffitt Cancer Center in Tampa, FL USA and an Associate Professor at the Department of Oncologic Sciences at the University of South Florida. He is an experienced board-certified clinical physicist, with research interests centered on radiation dosimetry and quality assurance of complex dynamic treatments. This includes evaluation and improvement of dosimetry systems, particularly diode arrays, clinical comparisons, applications to different dose modulation techniques, and 4D dosimetry. Over the span of his career, Dr. Feygelman has over 60 peer-reviewed publications.