Radiation Risk Analysis Tools
Interactive RadioEpidemiological Program (IREP)

The Interactive RadioEpidemiological Program (IREP) was developed as part of the effort to update the 1985 Radioepidemiological Tables report. The 1985 report was mandated by the 1983 "Orphan Drug Act" (PL 97-414) which instructs to "devise and publish radioepidemiological tables that estimate the likelihood that persons who have or have had any of the radiation-related cancers and who have received specific doses prior to the onset of such disease developed cancer as a result of these doses."

Radiation Risk Assessment Tool (RadRAT)

The Radiation Risk Assessment Tool (RadRAT) is an online calculator for estimating the lifetime risk of cancer incidence for members of the U.S. population (or countries with similar cancer incidence rates) from exposure to ionizing radiation for doses below 1 Gy.

The calculator works using organ-specific dose estimates according to age at exposure and sex. Lifetime total cancer risk and organ-specific risk estimates are outputted along with a 90% uncertainty range.

Thyroid Dose and Risk Calculator for Nuclear Weapons Fallout for the US Population

The Thyroid Dose and Risk Calculator for Nuclear Weapons Fallout is an online calculator for estimating radiation dose received by your thyroid gland from radionuclides in fallout from nuclear tests conducted at the Nevada Test Site (NTS) and sites outside of the United States (global fallout).

The calculator estimates your risk of thyroid cancer from this exposure. This calculator also provides an estimate of probability of causation/assigned share (PC/AS) for individuals who have been diagnosed with thyroid cancer.