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Radiation Protection Dosimetry Advance Access originally published online on June 16, 2006
Radiation Protection Dosimetry 2006 120(1-4):155-158; doi:10.1093/rpd/ncj010
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

The quality of dental radiography in the Czech Republic—results of a TLD and film postal audit

Leos Novák1,2,*

1 National Radiation Protection Institute (NRPI), Srobárova 48, 100 00 Prague 10, Czech Republic
2 CTU in Prague, Faculty of Nuclear Sciences and Physical Engineering, Brehová 7, 110 00 Prague 1, Czech Republic

* Corresponding author: leos.novak{at}suro.cz

Since 2002, the postal audit in dental radiography has been supplementing standard quality control (QC) tools for dental intraoral X-ray machines. An aim of the audit is to check basic X-ray machine parameters (field size, exposure reproducibility), and a quality of the whole process of diagnostic imaging (entrance surface air-kerma measurement, a check of film processing and an image quality evaluation). The standard QC tests, performed by private companies, check mainly the X-ray unit. Conversely, the audit gives better information about the patient examination practices. During the period of January 2002 to May 2004 ~4000 audits were performed. The results confirmed that main problems in dental radiography are due to incorrect film processing, non-optimised setting of the exposure parameters and use of obsolete X-ray machines. Only ~30% of performed audits were satisfactory with respect to all checked parameters.


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