- Industry: Government
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United States Department of Health and Human Services, Radiation Emergency Medical Management
The measure and analysis of the radiation being emitted from a person’s entire body, detected by a counter external to the body.
Industry:Medical devices
The factor by which the absorbed dose (rad or gray) must be multiplied to obtain a quantity that expresses, on a common scale for all ionising radiation, the biological damage (rem or sievert) to the exposed tissue. It is used because some types of radiation, such as alpha particles, are more biologically damaging to live tissue than other types of radiation when the absorbed dose from both is equal. The term, quality factor, has now been replaced by "radiation weighting factor" in the latest system of recommendations for radiation protection. (radiation terms, health physics society)
Industry:Medical devices
An exposure of the body to radiation, in which the entire body, rather than an isolated part, is irradiated by an external source.
Industry:Medical devices
A basic unit of absorbed radiation dose. It is a measure of the amount of energy absorbed by the body. The rad is the traditional unit of absorbed dose. It is being replaced by the unit grey (gy), which is equivalent to 100 rad. One rad equals the dose delivered to an object of 100 ergs of energy per gramme of material. For more information, see “primer on radiation measurement” from cdc.
Industry:Medical devices
Electromagnetic radiation caused by deflection of electrons from their original paths, or inner orbital electrons that change their orbital levels around the atomic nucleus. X-rays, like gamma rays can travel long distances through air and most other materials. Like gamma rays, x-rays require more shielding to reduce their intensity than do beta or alpha particles. X-rays and gamma rays differ primarily in their origin: x-rays originate in the electronic shell; gamma rays originate in the nucleus. See also neutron.
Industry:Medical devices
Energy moving in the form of particles or waves. Familiar radiations are heat, light, radio waves, and microwaves. ionising radiation is a very high-energy form of electromagnetic radiation.
Industry:Medical devices
Sometimes known as radiological protection, is the science of protecting people and the environment from the harmful effects of ionising radiation, which includes both particle radiation and high energy electromagnetic radiation. (source: wikipedia)
Industry:Medical devices
See also acute radiation syndrome (ars), or the cdc fact sheet “acute radiation syndrome” at http://emergency.cdc.gov/radiation/ars.asp.
Industry:Medical devices
A symbol prescribed by the code of federal regulations. It is a magenta or black trefoil on a yellow background. It must be displayed where certain quantities of radioactive materials are present or where certain doses of radiation could be received.
Industry:Medical devices
The deposition of unwanted radioactive material on the surfaces of structures, areas, objects, or people. It can be airborne, external, or internal. See also contamination, decontamination.
Industry:Medical devices
