Principal Investigators in the Radiation Epidemiology Branch (REB)

Dr. Elizabeth Cahoon’s research focuses on cancer and precancer risks conferred by environmental sources of radiation exposure, including ultraviolet radiation and ionizing radiation.

Dr. Kitahara is an epidemiologist and senior investigator in the Radiation Epidemiology Branch and a member of the Cancer Survivorship Research Unit. She studies radiation exposure and radiation-associated thyroid & brain cancers.

Choonsik Lee, Ph.D., develops methods and tools to estimate radiation dose from medical exposures, including treatment and diagnostic tests, in order to generate reliable data for use in epidemiological studies of ionizing radiation and cancer risk.

Mark Little, D.Phil. investigates the effect of varying dose levels of ionizing radiation on cancer and cardiovascular disease risk and develops novel mechanistic models of carcinogenesis and related radiobiological endpoints to account for time variation in latency and other patterns of radiation-induced cancer risk.

Dr. Morton’s research focuses on quantifying the risk of second cancers in different groups of cancer survivors, and elucidating the causes of second cancers. She is leading DCEG efforts to identify genetic variants associated with the development of second cancers, either independent of treatment exposures or that act jointly with specific treatments.

Jacqueline B. Vo, Ph.D., R.N., M.P.H., studies adverse treatment-related health effects among cancer survivors, particularly cardiovascular disease and subsequent malignancies. Her research emphasizes minoritized populations and how cancer outcomes can differ by race and ethnicity or socioeconomic status. She is a tenure-track investigator in the Radiation Epidemiology Branch.