Nov 22, 2024 · According to the National Council on Radiation Protection and Measurements (NCRP), the average annual radiation dose per person in the U.S. is 6.2 millisieverts (620 millirem) millirem). The pie chart below shows the sources of this average dose.

On average, Americans receive a radiation dose of about 0.62 rem (620 millirem) each year. Half of this dose comes from natural background radiation . Most of this background exposure comes from radon in the air, with smaller amounts from cosmic rays and the Earth itself.

According to recent estimates, the average person in the U.S. receives an effective dose of about 3 mSv per year from natural radiation, which includes cosmic radiation from outer space. These natural "background doses" vary according to where you live.

Feb 13, 2025 · Use the Radiation Dose Calculator to estimate your yearly dose from sources of ionizing radiation. View a PDF version of the Radiation Terms and Units infographic here. 1 Agency for Toxic Substances and Disease Registry, 1990. "Toxicological Profile for Radium" (p. 53). Retrieved from https://www.atsdr.cdc.gov/toxprofiles/tp144.pdf.

Radiation dose rates in the environment can be thought of as ambient radiation levels. Ambient radiation levels are reported in gray per hour (Gy/h) or sievert per hour (Sv/h), which are the international units. In the United States, we use roentgen per hour (R/h) or rem per hour (rem/h).

Many individuals are exposed to additional radiation from medical diagnostics and procedures that can vary in dose by several orders of magnitude. The newly-revised DOE Ionizing Radiation Dose Ranges Chart puts this into perspective by comparing ranges of doses from natural sources with doses received occupationally or medically.

The average American has a yearly radiation dose of 6.2 mSv, evenly divided between natural and man-made sources (which includes medical scans, like X-rays or CT scans). If you don't undergo any medical imaging tests, your dose is around 3 mSv per year.

Download our Radiation Dose Reference Chart now for a listing of common imaging examination doses, updated to reflect the data presented in NCRP Report No. 184. Related reports, statements and ACR Practice Parameters and Technical Standards.

Dec 10, 2024 · This page provides a general tool to calculate an estimate of your annual radiation dose from sources the public may encounter.

Mar 18, 2011 · In the UK, Public Health England calculated that on average people are exposed to about 2.7 millisieverts (mSv) of radiation a year. A millisievert is a measure of radiation dose which...