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

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State: Public
Version: author
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It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
Serval ID
serval:BIB_45C0B48DDD32
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Individual monitoring of internal exposure for nuclear medicine workers in Switzerland.
Journal
Radiation Protection Dosimetry
Author(s)
Baechler S., Stritt N., Bochud F.O.
ISSN
1742-3406 (Electronic)
ISSN-L
0144-8420
Publication state
Published
Issued date
2011
Volume
144
Number
1-4
Pages
464-467
Language
english
Abstract
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
Open Access
Yes
Create date
26/04/2011 14:48
Last modification date
01/10/2019 7:17
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