Principal Investigators Toggle Show only specific programs/branches Entire Division Office of the Director Toggle Trans-Divisional Research Program Connect Coordinating Center Data Science and Engineering Group Barnholtz-Sloan Research Group Biostatistics Branch Clinical Genetics Branch Clinical Epidemiology Unit Infections and Immunoepidemiology Branch Integrative Tumor Epidemiology Branch Lab of Translational Genomics Metabolic Epidemiology Branch Occupational & Environmental Epidemiology Branch Radiation Epidemiology Branch Dosimetry Unit Dosimetry UnitL Lee, Choonsik, Ph.D.Organ radiation dose estimations for diagnostic and therapeutic medical procedures using computer simulations of human anatomy and radiation-generating machines.