Criteria for establishing shielding of multi-detector computed tomography (MDCT) rooms.

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Serval ID
serval:BIB_2E57DF7B305B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Criteria for establishing shielding of multi-detector computed tomography (MDCT) rooms.
Journal
Radiation Protection Dosimetry
Author(s)
Verdun F.R., Aroua A., Baechler S., Schmidt S., Trueb P.R., Bochud F.O.
ISSN
1742-3406[electronic], 0144-8420[linking]
Publication state
Published
Issued date
04/2010
Volume
139
Number
1-3
Pages
403-409
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
The aim of this work is to compare two methods used for determining the proper shielding of computed tomography (CT) rooms while considering recent technological advances in CT scanners. The approaches of the German Institute for Standardisation and the US National Council on Radiation Protection and Measurements were compared and a series of radiation measurements were performed in several CT rooms at the Lausanne University Hospital. The following three-step procedure is proposed for assuring sufficient shielding of rooms hosting new CT units with spiral mode acquisition and various X-ray beam collimation widths: (1) calculate the ambient equivalent dose for a representative average weekly dose length product at the position where shielding is required; (2) from the maximum permissible weekly dose at the location of interest, calculate the transmission factor F that must be taken to ensure proper shielding and (3) convert the transmission factor into a thickness of lead shielding. A similar approach could be adopted to use when designing shielding for fluoroscopy rooms, where the basic quantity would be the dose area product instead of the load of current (milliampere-minute).
Pubmed
Web of science
Open Access
Yes
Create date
27/05/2010 10:55
Last modification date
01/10/2019 7:17
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