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United States Department of Health and Human Services
Sektör: Government
Number of terms: 33950
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United States Department of Health and Human Services, Radiation Emergency Medical Management
Energy moving in the form of particles or waves. Familiar radiations are heat, light, radio waves, and microwaves. Ionizing 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 ionizing 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
The spontaneous disintegration of the nucleus of an atom.
Industry:Medical devices
The time required for a quantity of a radioisotope to decay by half. For example, because the half-life of iodine-131 (i-131) is 8 days, a sample of i-131 that has 10 mci of activity on january 1, will have 5 mci of activity 8 days later, on january 9. See also biological half-life, decay constant, effective half-life. (illustrations)
Industry:Medical devices
Material that contains unstable (radioactive) atoms that give off radiation as they decay.
Industry:Medical devices
The process of spontaneous transformation of the nucleus, generally with the emission of alpha or beta particles often accompanied by gamma rays. This process is referred to as decay or disintegration of an atom.
Industry:Medical devices
Disposable, radioactive materials resulting from nuclear operations. Wastes are generally classified into two categories, high-level and low-level waste.
Industry:Medical devices