Bachelor, Bowdoin College, 1964; Master of Science, University of Pennsylvania, 1966; Doctor of Philosophy, University of Pennsylvania, 1969.
Instructor radiology, University of Chicago, 1969-1971;
assistant professor, University of Chicago, 1971-1975;
associate professor, University of Chicago, 1976-1980;
director graduate programs in medical physics, University of Chicago, 1979-1985;
professor, University of Chicago, since 1980;
professor structural biology, University of Chicago, 1984-1986. Member diagnostic research advisory group National Cancer Institute, 1980-1981. Member science committee National Council on Radiation Protection and Measurements, 1982-1995, International Commision on Radiation Units and Measurements, 1988-1996, chairman science committee, 1992-1996.
Consultant and lecturer in field.
Member Radiological Society North America, American Association Physicists in Medicine, Society Medical Decision Making, Association University Radiologists, Society for Health Superior vena cava syndrome Research in Radiology, Phi Beta Kappa, Sigma Xi.
Married Maryanne Theresa Bahr, July, 1967 (divorced 1988). Children: Rebecca, Molly.