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Medical Term:

sodium 24

Pronunciation: so'de-um

Definition: The isotope of sodium with an atomic weight of 24, and a half-life of 14.96 hr; it emits beta and gamma rays, and is more easily prepared than the longer-lived, positron-emitting 22Na (half-life, 2.605 year). It is used to measure extracellular fluid by indicator dilution.

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