Individual monitoring of internal exposure for nuclear medicine workers in Switzerland.

Détails

ID Serval
serval:BIB_45C0B48DDD32
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Individual monitoring of internal exposure for nuclear medicine workers in Switzerland.
Périodique
Radiation Protection Dosimetry
Auteur(s)
Baechler S., Stritt N., Bochud F.O.
ISSN
1742-3406 (Electronic)
ISSN-L
0144-8420
Statut éditorial
Publié
Date de publication
2011
Volume
144
Numéro
1-4
Pages
464-467
Langue
anglais
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.
Pubmed
Web of science
Création de la notice
26/04/2011 14:48
Dernière modification de la notice
03/03/2018 16:46
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