Copper filtration in pediatric digital X-ray imaging: its impact on image quality and dose.

Détails

ID Serval
serval:BIB_23B574C58107
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Copper filtration in pediatric digital X-ray imaging: its impact on image quality and dose.
Périodique
Radiological Physics and Technology
Auteur(s)
Brosi P., Stuessi A., Verdun F.R., Vock P., Wolf R.
ISSN
1865-0341 (Electronic)
Statut éditorial
Publié
Date de publication
2011
Volume
4
Numéro
2
Pages
148-155
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
The effect of copper (Cu) filtration on image quality and dose in different digital X-ray systems was investigated. Two computed radiography systems and one digital radiography detector were used. Three different polymethylmethacrylate blocks simulated the pediatric body. The effect of Cu filters of 0.1, 0.2, and 0.3 mm thickness on the entrance surface dose (ESD) and the corresponding effective doses (EDs) were measured at tube voltages of 60, 66, and 73 kV. Image quality was evaluated in a contrast-detail phantom with an automated analyzer software. Cu filters of 0.1, 0.2, and 0.3 mm thickness decreased the ESD by 25-32%, 32-39%, and 40-44%, respectively, the ranges depending on the respective tube voltages. There was no consistent decline in image quality due to increasing Cu filtration. The estimated ED of anterior-posterior (AP) chest projections was reduced by up to 23%. No relevant reduction in the ED was noted in AP radiographs of the abdomen and pelvis or in posterior-anterior radiographs of the chest. Cu filtration reduces the ESD, but generally does not reduce the effective dose. Cu filters can help protect radiosensitive superficial organs, such as the mammary glands in AP chest projections.
Mots-clé
Autoanalysis, Child, Child, Preschool, Copper/chemistry, Filtration/instrumentation, Filtration/methods, Humans, Phantoms, Imaging, Polymethyl Methacrylate/chemistry, Quality Control, Radiation Dosage, Radiation Protection/instrumentation, Radiation Protection/methods, Radiographic Image Enhancement/instrumentation, Radiographic Image Enhancement/methods, Radiography, Thoracic/instrumentation, Radiography, Thoracic/methods, Software, X-Ray Intensifying Screens
Pubmed
Création de la notice
15/02/2012 16:28
Dernière modification de la notice
03/03/2018 14:55
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