CHARACTERISING THE EOS SLOT-SCANNING SYSTEM WITH THE EFFECTIVE DETECTIVE QUANTUM EFFICIENCY.

Details

Serval ID
serval:BIB_55AC1AB77E80
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
CHARACTERISING THE EOS SLOT-SCANNING SYSTEM WITH THE EFFECTIVE DETECTIVE QUANTUM EFFICIENCY.
Journal
Radiation protection dosimetry
Author(s)
Clavel A.H., Monnin P., Létang J.M., Verdun F.R., Darbon A.
ISSN
1742-3406 (Electronic)
ISSN-L
0144-8420
Publication state
Published
Issued date
04/2016
Peer-reviewed
Oui
Volume
169
Number
1-4
Pages
319-324
Language
english
Notes
Publication types: Evaluation Studies ; Journal Article
Publication Status: ppublish
Abstract
As opposed to the standard detective quantum efficiency (DQE), effective DQE (eDQE) is a figure of merit that allows comparing the performances of imaging systems in the presence of scatter rejection devices. The geometry of the EOS™ slot-scanning system is such that the detector is self-collimated and rejects scattered radiation. In this study, the EOS system was characterised using the eDQE in imaging conditions similar to those used in clinical practice: with phantoms of different widths placed in the X-ray beam, for various incident air kerma and tube voltages corresponding to the phantom thickness. Scatter fractions in EOS images were extremely low, around 2 % for all configurations. Maximum eDQE values spanned 9-14.8 % for a large range of air kerma at the detector plane from 0.01 to 1.34 µGy. These figures were obtained with non-optimised EOS setting but still over-performed most of the maximum eDQEs recently assessed for various computed radiology and digital radiology systems with antiscatter grids.

Keywords
Equipment Design, Equipment Failure Analysis, Imaging, Three-Dimensional/instrumentation, Phantoms, Imaging, Radiation Dosage, Radiographic Image Enhancement/instrumentation, Radiographic Image Interpretation, Computer-Assisted/instrumentation, Reproducibility of Results, Sensitivity and Specificity, Tomography, X-Ray Computed/instrumentation, Transducers
Pubmed
Create date
28/12/2015 15:34
Last modification date
20/08/2019 14:10
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