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Version: 16.11d (Release date: 2016-11-28)
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Cesium Cs 137 (Code C68812)

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Terms & Properties

Preferred Name: Cesium Cs 137

Definition: A radioactive isotope of cesium with an atomic mass of 139 and potential application in radiotherapy. Cesium Cs 137 is prevalent due to its spontaneous production, which occurs as a result of nuclear fission of other radioactive materials, such as uranium and plutonium. This radionuclide has a relatively long half-life, 30 years, and decays by emitting beta particles. Both Cs 137 and its metastable nuclear isomer, barium-137m, emit gamma radiation of moderate energy and so are used in sterilization procedures in the food industry or in hospital environments.

Label: Cesium Cs 137

NCI Thesaurus Code: C68812 (Search for linked caDSR metadata)  (search value sets)

NCI Metathesaurus Link: C0303379  (see NCI Metathesaurus info)

Synonyms & Abbreviations: (see Synonym Details)
Cesium, Isotope of Mass 137
Cesium-137
CESIUM CS-137
Cesium Cs 137
Cs-137

External Source Codes: 
CAS Registry Number 10045-97-3 (see NLM ChemIDplus info)
FDA UNII Code 4T2E65IAR7
PDQ Closed Trial Search ID 540312
PDQ Open Trial Search ID 540312 (check for NCI PDQ open clinical trial info)
UMLS CUI C0303379

Other Properties:
Name Value (qualifiers indented underneath)
code C68812
Contributing_Source FDA
Legacy_Concept_Name Cesium-137
Semantic_Type Pharmacologic Substance

Additional Concept Data: 
Defined Fully by Roles: No  

URL: https://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&code=C68812

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