Establishment of diagnostic reference levels in cardiac CT in France: a need for patient dose optimisation.
Radiat Prot Dosimetry
; 164(1-2): 116-9, 2015 Apr.
Article
em En
| MEDLINE
| ID: mdl-25342609
ABSTRACT
The objective of this study was to propose diagnostic reference levels (DRLs) for coronary computed tomography angiography (CCTA), in the context of a large variability in patient radiation dose, and the lack of European recommendations. Volume Computed Tomography Dose Index (CTDIvol) and dose-length product (DLP) were collected from 460 CCTAs performed over a 3-month period at eight French hospitals. CCTAs (â¼50 per centre) were performed using the routine protocols of the centres, and 64- to 320-detector CT scanners. ECG gating was prospective (n = 199) or retrospective (n = 261). The large gap in dose between these two modes required to propose specific DRLs 26 and 44 mGy for CTDIvol, and 370 and 970 mGy cm for DLP, respectively. This study confirms the large variability in patient doses during CCTA and underlines the need for the optimisation of cardiac acquisition protocols. Availability of national DRLs should be mandatory in this setting.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radiometria
/
Tomografia Computadorizada por Raios X
/
Angiografia Coronária
Tipo de estudo:
Diagnostic_studies
/
Guideline
Idioma:
En
Revista:
Radiat Prot Dosimetry
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
França