A. Iulian Apostoaei, Ph.D.
Senior Scientist
Dr. Apostoaei has more than 30 years of experience in various aspects of radiological dose and risk assessment. He specializes in evaluation and interpretation of exposure situations, calculation of doses from internal and external sources of radiation, estimation of risk of cancer incidence and mortality in individual workers, members of the public and in general population, and analyses of uncertainties using analytical and Monte-Carlo propagation methods.
Dr. Apostoaei is a member of the National Council on Radiation Protection and Measurements (NCRP), the International Commission on Radiological Protection (ICRP) and served as an expert consultant for United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). He is a co-author of the NCRP Report No. 164 on uncertainties in internal dosimetry, the ICRP Publication 150 on cancer risks from exposure to plutonium and uranium, and the 2019 UNSCEAR report on evaluation of health risks and their uncertainties after exposure to low-LET radiation. For the National Institute of Occupational Safety and Health (NIOSH), he analyzed scientific information and published on possible values of dose and dose rate effectiveness factors (DDREF) for use in assessing risk from chronic exposures to radiation.
Dr. Apostoaei has participated in numerous dose and risk assessment studies including (a) model validation exercises related to reconstruction of doses to people from Czech Republic and Finland exposed to Cs-137 from the Chernobyl accident, (b) reconstruction of doses and estimation of risk of cancer for individuals exposed to historic releases of I-131 from the Oak Ridge Reservation, (c) estimation of radiation doses and risk of cancer from exposure to various radionuclides released into the Columbia River from Hanford Nuclear Facilities and into the Clinch River from the Oak Ridge National Laboratory, (d) reconstruction of doses for members of the public living near to the Idaho National Engineering Laboratory (INEL), (e) estimation of risk to members of public from nuclear weapons fallout in the Marshall Islands, (f) estimation of radiation doses from fluoroscopy and radiography examinations received by patients in the Canadian Fluoroscopy Cohort Study (CFCS) treated for tuberculosis from 1930 to 1969, and (g) for the NCRP, technical reviews of radiation dose and risk assessments for the Fukushima Daiichi Nuclear Power Plant damaged after the 2011 tsunami.
Dr. Apostoaei is a contributor, co-author and/or developer of the following radiation dose and risk assessment tools:
- The Interactive Radio-Epidemiological Program (IREP) developed in collaboration with the National Cancer Institute (NIH/NCI) and currently used by NIOSH to estimate the probability of radiogenic cancer causation in nuclear workers.
– NIH-IREP
- NCI’s Radiation Risk Assessment Tool (RadRAT), an online calculator for estimating lifetime risk of cancer incidence from exposure to ionizing radiation. The calculator has a wide range of applicability and has been used in various risk assessments, including studies of effects of exposure to radiation from X-ray computer tomography (CT) procedures.
– RadRAT
- NCI's calculator of thyroid doses and risks from exposures to radionuclides in fallout from nuclear weapons detonated at the Nevada Test Site and globally.
- NIOSH’s Internal Dose Evaluation Program (InDEP) estimation of radiation doses from intakes of plutonium and uranium by analysis of bioassay data.
– InDEP
- NASA’s Risk Analysis Environment (RAE) for estimation of health risks in astronauts due to exposures to space radiation.
Dr. Apostoaei is an author on more than 30 scientific reports and papers published in peer-reviewed journals.
E-mail Dr. Apostoaei at: iulian@orrisk.com
