Individual radiation exposure from computed tomography: a survey of paediatric practice in French university hospitals, 2010-2013.
Eur Radiol
; 28(2): 630-641, 2018 Feb.
Article
en En
| MEDLINE
| ID: mdl-28836026
ABSTRACT
OBJECTIVES:
To describe computed tomography (CT) scanning parameters, volume CT dose index (CTDIvol) and dose-length product (DLP) in paediatric practice and compare them to current diagnostic reference levels (DRLs).METHODS:
The survey was conducted in radiology departments of six major university hospitals in France in 2010-2013. Data collection was automatised to extract and standardise information on scanning parameters from DICOM-header files. CTDIvol and DLP were estimated based on Monte Carlo transport simulation and computational reference phantoms.RESULTS:
CTDIvol and DLP were derived for 4,300 studies, four age groups and 18 protocols. CTDIvol was lower in younger patients for non-head scans, but did not vary with age for routine head scans. Ratios of 95th to 5th percentile CTDIvol values were 2-4 for most body parts, but 5-7 for abdominal examinations and 4-14 for mediastinum CT with contrast, depending on age. The 75th percentile CTDIvol values were below the national DRLs for chest (all ages) and head and abdominal scans (≥10 years).CONCLUSION:
The results suggest the need for a better optimisation of scanning parameters for routine head scans and infrequent protocols with patient age, enhanced standardisation of practices across departments and revision of current DRLs for children. KEY POINTS ⢠CTDIvol varied little with age for routine head scans. ⢠CTDIvol was lowest in youngest children for chest or abdominal scans. ⢠Individual and inter-department variability warrant enhanced standardisation of practices. ⢠Recent surveys support the need for revised diagnostic reference levels. ⢠More attention should be given to specific protocols (sinuses, neck, spine, mediastinum).Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Tomografía Computarizada por Rayos X
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Exposición a la Radiación
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Fantasmas de Imagen
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Hospitales Universitarios
Tipo de estudio:
Clinical_trials
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Guideline
Límite:
Adolescent
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Child
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Child, preschool
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Female
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Humans
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Infant
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Male
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Newborn
País/Región como asunto:
Europa
Idioma:
En
Revista:
Eur Radiol
Asunto de la revista:
RADIOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Francia