relative biological effectiveness


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effectiveness

 [ĕ-fek´tiv-nes]
the ability to produce a specific result or to exert a specific measurable influence.
relative biological effectiveness an expression of the effectiveness of other types of radiation in comparison with that of gamma or x-rays. Abbreviated RBE.

relative biological effectiveness

n.
A measure of the capacity of a specific ionizing radiation to produce a specific biological effect, expressed relative to a reference radiation, such as radium gamma rays or 200-volt x-rays.

relative biological effectiveness (RBE)

[rel′ətiv]
Etymology: L, relatio
a measure of the cell-killing ability of a particular radiation compared with that of 250 keV x-rays. The ratio of the number of cells killed with the test radiation over the number killed with the 250 keV radiation is the RBE.

effectiveness

the ability to produce a specific result or to exert a specific measurable influence.

relative biological effectiveness
an expression of the effectiveness of other types of radiation in comparison with that of gamma or x-rays.
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