radioiron

ra·di·o·i·ron

(rā'dē-ō-ī'ŏrn), A radioactive isotope of iron, for example, 59Fe.

radioactive iron

Any of the radionuclides of iron, the most commonly used of which are beta- and gamma-emitting 59Fe, which has a half-life of 44.5 days, and 55Fe, which decays by electron capture and has a half-life of 2.74 years. 59Fe and 55Fe are not used clinically.

radioiron

(rā″dē-ō-ī′ĕrn) A radioactive isotope of iron; 55Fe and 59Fe are used in medical studies.