Fiche du document
2011
- doi: 10.1093/rpd/ncq350
- issn: 0144-8420
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1093/rpd/ncq350
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/pmid/21081522
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/eissn/1742-3406
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_45C0B48DDD320
info:eu-repo/semantics/openAccess , Copying allowed only for non-profit organizations , https://serval.unil.ch/disclaimer
Sujets proches
Radioisotopes in medicine Atomic medicineCiter ce document
S. Baechler et al., « Individual monitoring of internal exposure for nuclear medicine workers in Switzerland. », Serveur académique Lausannois, ID : 10.1093/rpd/ncq350
Métriques
Partage / Export
Résumé
Monitoring of internal exposure for nuclear medicine workers requires frequent measurements due to the short physical half-lives of most radionuclides used in this field. The aim of this study was to develop screening measurements performed at the workplace by local staff using standard laboratory instrumentation, to detect whether potential intake has occurred. Such measurements do not enable to determine the committed effective dose, but are adequate to verify that a given threshold is not exceeded. For radioiodine, i.e. (123)I, (124)I, (125)I and (131)I, a calibrated surface contamination monitor is placed in front of the thyroid to detect whether the activity threshold has been exceeded. For radionuclides with very short physical half-lives (≤6 h), such as (99m)Tc and those used in positron emission tomography imaging, i.e. (11)C, (15)O, (18)F and (68)Ga, screening procedures consist in performing daily measurements of the ambient dose rate in front of the abdomen. Other gamma emitters used for imaging, i.e. (67)Ga, (111)In and (201)Tl, are measured with a scintillation detector located in front of the thorax. For pure beta emitters, i.e. (90)Y and (169)Er, as well as beta emitters with low-intensity gamma rays, i.e. (153)Sm, (177)Lu, (186)Re and (188)Re, the procedure consists in measuring hand contamination immediately after use. In Switzerland, screening procedures have been adopted by most nuclear medicine services since such measurements enable an acceptable monitoring while taking into account practical and economic considerations.