background radiation

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Related to background radiation: cosmic background radiation

back·ground ra·di·a·tion

irradiation from environmental sources, including the earth's crust, the atmosphere, cosmic rays, and ingested radionuclides.

Farlex Partner Medical Dictionary © Farlex 2012

background radiation

The amount of ionising (electromagnetic) radiation to which a person is exposed from natural sources, including terrestrial radiation due to natural radionuclides in the soil (e.g., radon), cosmic radiation and fallout in the environment from anthropogenic sources.

background radiation

Radiation The amount of ionizing-electromagnetic radiation to which a person is exposed from natural sources including terrestrial radiation due to natural radionuclides in the soil–eg, radon, cosmic radiation, and fallout in the environment from anthropogenic sources. See Radon.

back·ground ra·di·a·tion

(bak'grownd rā'dē-ā'shŭn)

Irradiation from environmental sources, including the earth's crust, the atmosphere, cosmic rays, and ingested radionuclides in the body.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

back·ground ra·di·a·tion

(bak'grownd rā'dē-ā'shŭn)

Irradiation from environmental sour-ces, including the earth's crust, the atmosphere, cosmic rays, and ingested radionuclides.

Medical Dictionary for the Dental Professions © Farlex 2012

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References in periodicals archive ?

[3] A P Radhakrishna, H M Somashekarappa, Y Narayana, K Sidappa (1993).A new natural background radiation area on the south west coast of India.

Analysis of radioactivity content in drinking water of the coastal villages (NHBRA) in Kanyakumari district of Tamilnadu, India

'A criticism of a conservative approach in the use of ionising radiation is that we are all daily exposed to background radiation and have evolved cellular mechanisms capable of repairing damage caused by ionising radiation.

The fallacy of comparing diagnostic radiation with background radiation; and the need to learn from past mistakes

At the spots with 5000 times more background radiation, a person would receive this annual dose of one millisievert in just two hours, Raina said.

Radiation alarm at Mayapuri again

The Cosmic Microwave Background Radiation was discovered by accident in 1965 by two Bell Laboratory scientists, Arno Penzias and Robert Wilson, as they tracked down sources of radio interference.

Cosmology comes off age

4 issue of the Journal of the American Medical Association (JAMA) found that among 1,965 people at 50 hospitals, the average radiation dose from a CT cardiac angiogram was 12 mSv--about three to four years of background radiation. Dr.

Weigh the risks and benefits of cardiac imaging studies: as the use of radiation in diagnosing heart disease rises, experts call for judicious use of these tests in the appropriate patients

In 1980, Cohen reported total cancer mortality rates were inversely related to background radiation for the United States population, which was then around 200 million (Figure 2c).

The health effects of low-dose ionizing radiation

This testimony discusses (1) the benefits of using DOE's aerial background radiation surveys to enhance emergency response capabilities and (2) the physical security measures in place at DOE's two key emergency response facilities and whether they are consistent with DOE guidance.

Combating Nuclear Terrorism: Federal Efforts to Respond to Nuclear and Radiological Threats and to Protect Key Emergency Response Facilities Could Be Strengthened

Each full-body scan produces less than 10 microrem of emission, which is equivalent to the exposure a passenger receives in about two minutes of airplane flight at altitude or an individual receives every 15 minutes from naturally occurring background radiation, according to TSA.

TSA tests new X-ray security scanners

You're probably less aware that "background radiation," from sources like cosmic rays, bathes your body almost continuously.

X-ray danger: get the big picture: your cumulative radiation dose is growing. Do you really need to add to it?

Hiserodt's book goes on to explain how Americans are negatively affected by the government's reliance on Linear Nothreshold Theory: avoiding nuclear power (a power source arguably much safer and more plentiful than fossil fuels); forfeiting medical advances (higher live birth rates and fewer birth defects); adding unnecessary angst into our lives (he explains that radioactive "dirty bombs" aren't as dangerous as the public has been led to believe); and wasting money (our government is digging up "radioactive hot spots" for "safe" containment at a cost of hundreds of billions of dollars, yet the sites emit less radioactivity than one would find in normal background radiation of large parts of the world).

Mint candies, radiation, and illness: countries around the world are looking to use small amounts of radiation to prevent disease. The book Underexposed: What If Radiation Is Actually Good for You? explains why

Measurements by the satellite ''provided increased support for the Big Bang scenario for the origin of the universe, as this is the only scenario that predicts the kind of cosmic microwave background radiation measured by COBE,'' the academy said.