radiosodium

ra·di·o·so·di·um

(rā'dē-ō-sō'dē-ŭm),
A radioactive isotope of sodium; for example, 24Na.

radioactive sodium

Any of the radioactive isotopes of sodium, the most stable of which is positron-emitting 22Na, which has a half-life of 2.6 years. 22Na can be produced in a particle accelerator and may be used in nuclear medicine imaging and positron emission tomography (PET). 24Na has a 15-hour half life, quantification of which is used to determine the absorbed radiation dose of a patient exposed to intense neutron flux.

radiosodium

(rā″dē-ō-sō′dē-ŭm)
A radioisotope of sodium such as 24Na and 22Na.
References in periodicals archive ?
The amount of radiosodium needed is so small that it does no harm to the patient.