strontium-90medical dictionary

A radioactive strontium isotope; a beta emitter with half-life of 29.1 years; a major component (about 5%) of the uranium fission products; it is incorporated into bone tissue where turnover is slow; used in the therapy of certain eye conditions (e.g., pterygia, traumatic corneal ulceration, etc.).

Abbreviation: 90Sr

(05 Mar 2000)