A radioisotope of calcium, particularly calcium 45.

radioactive calcium

Any of the radionuclides of calcium, the most common of which are the beta-emitting 45Ca, which has a half-life of 163 days, and the beta and gamma-emitting 47Ca, which has a half-life of 4.5 days and has some currency as a tracer for calcium metabolism studies.


A radioisotope of calcium; 45Ca and 47Ca are used in medical studies.
References in periodicals archive ?
Comparison of bone formation rates measured by radiocalcium kinetics and double-tetracycline labeling in maintenance dialysis patients.
The fate of intravenously injected radiocalcium in human beings.
Our results are similar to those previously observed, which showed a lack of correlation between 1,25-dihydroxyvitamin D and Ca absorption as assessed by radiocalcium in normal subjects [21, 22].