- Industry: Government
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United States Department of Health and Human Services, Radiation Emergency Medical Management
1 amu is equal to one twelfth of the mass of a carbon-12 atom.
Industry:Medical devices
The total number of protons and neutrons in the nucleus of an atom.
Industry:Medical devices
The mass of an atom, expressed in atomic mass units. For example, the atomic number of helium-4 is 2, the atomic mass is 4, and the atomic weight is 4.00026.
Industry:Medical devices
Ionising radiation from natural sources, such as terrestrial radiation due to radionuclides in the soil or cosmic radiation originating in outer space.
Industry:Medical devices
The amount of a radioactive material that will undergo one decay (disintegration) per second. For more information, see “primer on radiation measurement” from cdc.
Industry:Medical devices
Energetic beta particles with high enough specific-activity, if left on the skin surface for a sufficient length of time, may cause erythema and dry (or even wet) desquamation. These are often called "beta burns." "beta burns" have been described after a nuclear weapon detonation as a consequence of fallout on the skin.
Industry:Medical devices
(image) electrons ejected from the nucleus of a decaying atom. Although they can be stopped by a thin sheet of aluminum, beta particles can penetrate the dead skin layer, potentially causing burns. They can pose a serious direct or external radiation threat and can be lethal depending on the amount received. They also pose a serious internal radiation threat if beta-emitting atoms are ingested or inhaled. See also alpha particle, gamma rays, neutron, x-ray.
Industry:Medical devices
A measurement of radioactive materials present inside a person’s body through analysis of the person’s blood, urine, feces, or sweat.
Industry:Medical devices
The laboratory or clinical methods used to measure or estimate the dose of ionising radiation energy absorbed by an individual. Biodosimetry tools measure the dose to internal organs and tissues from external exposure and internal contamination.
Industry:Medical devices
