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Radiation Protection Dosimetry Advance Access originally published online on February 5, 2008
Radiation Protection Dosimetry 2008 129(1-3):127-131; doi:10.1093/rpd/ncn004
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Optimisation strategies introduced for CR at health care centres in Estonia

Kalle Kepler1,* and Anatoli Vladimirov2

1 Training Centre of Medical Physics and Biomedical Engineering, University of Tartu, Tähe 4, 51010 Tartu, Estonia
2 Testing Centre, University of Tartu, Tähe 4, 51010 Tartu, Estonia

* Corresponding author: kalle.kepler{at}ut.ee

In recent years, starting from 2001, conventional film–screen radiography has been rapidly replaced by digital (mostly by computed radiography, CR) techniques in Estonia. New strategies for optimisation and quality assurance for digital radiography have been introduced by the DIMOND III and SENTINEL partners recently. It includes consideration to diagnostic requirements of a given clinical situation, but also objectivation and standardisation of image quality, e.g. using CDRAD test phantom, and constancy testing. The aim of this work is to evaluate the performance of an automatic exposure control (AEC) at different sensitivities when used with the Fujifilm CR system. Image quality, using threshold contrast-detail detectability (TCDD) and signal-to-noise ratio squared related to dose (SNR2/D), was also investigated for different sensitivities and tube potential values for this combination. Based on the image evaluation data, optimum speed modes for the organ programme settings have been proposed.


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