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strontium 89

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strontium

 [stron´she-um]
a chemical element, atomic number 38, atomic weight 87.62, symbol Sr. (See Appendix 6.)
strontium 89 a radioactive isotope of strontium having a half-life of 50.55 days and decaying by beta emission. It is used in the form of the chloride as a radiation source in the palliative treatment of bone pain in patients with metastatic bone lesions.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

stron·ti·um 89 (89Sr),

(stron'shē-ŭm),
A radioactive strontium isotope; a β emitter with a half-life of 50.52 days; used as a tracer in research activities such as the study of strontium absorption by the body and of strontium incorporation in bone.
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