7) Although in the past it has been argued that the biological damage and health risks from ionizing radiation may not have a linear relationship with dose, the BEIR committee concluded that the biological and biophysical data supports a linear no-threshold (LNT) risk estimate model that indicates that even the smallest dose of low-level ionizing radiation has the potential to cause an increase in health risks to humans.
The new epidemiological information and approaches used in BEIR VII include estimation of risks for development of leukemias and of solid tumors.
15-18) The BEIR VII Report has taken into account a comprehensive examination of the literature on this subject and has concluded that there exists a "preponderance of scientific" experimental and epidemiological data that predominantly supports the use of an LNT model to predict cancer risk.
EPA currently uses a risk projection model developed by the National Academy of Science (NAS); this model is published in the BEIR IV report (23).
Using the modified BEIR IV model, EPA estimates that the number of annual U.
A committee of the National Academy of Sciences, funded by EPA, is currently conducting a comprehensive review of the health risks associated with radon based on new information available since publication of the BEIR IV report in 1988.
Berrington de Gonzalez relied on BEIR VII to derive her estimate of 29,000 additional cancers resulting from CT scans performed in 2007.
Every parameter in the BEIR VII model has a distribution of possible values," he says.
In 1999, the BEIR committee reanalyzed these data and derived two models for lung cancer risk from radon exposure (BEIR 1999).
In 1999, the BEIR committee conducted such an analysis of the five cohorts of miners with adequate smoking data and found that lung cancer risk due to radon exposure differs according to smoking status (BEIR 1999).
For the purpose of the BEIR VII report, the authoring committee defined low-LET radiation as levels up to about 100 mSv.
The BEIR VII report employed statistical data to draw its conclusions and reviewed studies of people exposed at work and in medical settings.