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

Détails

Ressource 1Télécharger: serval:BIB_2E57DF7B305B.P001 (323.70 [Ko])
Etat: Public
Version: de l'auteur
Licence: Non spécifiée
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ID Serval
serval:BIB_2E57DF7B305B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Criteria for establishing shielding of multi-detector computed tomography (MDCT) rooms.
Périodique
Radiation Protection Dosimetry
Auteur(s)
Verdun F.R., Aroua A., Baechler S., Schmidt S., Trueb P.R., Bochud F.O.
ISSN
1742-3406[electronic], 0144-8420[linking]
Statut éditorial
Publié
Date de publication
04/2010
Volume
139
Numéro
1-3
Pages
403-409
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
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
Oui
Création de la notice
27/05/2010 9:55
Dernière modification de la notice
01/10/2019 6:17
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