Rich Leggett

Richard W Leggett

Distinguished Scientist

Rich Leggett is a research scientist in the Environmental Sciences Division at Oak Ridge National Laboratory (ORNL).  His main research interest is in physiological systems modeling, with primary applications to the biokinetics and dosimetry of radionuclides and radiation risk analysis.  He was a member of Committee 2 of the International Commission on Radiological Protection (ICRP) from 2009-2021 and is currently a member of the ICRP Task Group on Internal Dosimetry (INDOS).  His physiological systems models of the human circulation, skeleton, and gastrointestinal transfer and his systemic biokinetic models for many elements are used by the ICRP as dosimetry and bioassay models. He is the author of ICRP Publication 70, Basic Anatomical and Physiological Data for Use in Radiological Protection: The Skeleton, and co-author of several other ICRP reports.