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Radiation Protection Dosimetry Advance Access published online on February 7, 2006
Radiation Protection Dosimetry, doi:10.1093/rpd/nci720
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Leuvens Special Issue Article

BULGARIAN EXPERIENCE IN THE ESTABLISHMENT OF REFERENCE DOSE LEVELS AND IMPLEMENTATION OF A QUALITY CONTROL SYSTEM IN DIAGNOSTIC RADIOLOGY

J. Vassileva 1 *, A. Dimov 1, A. Slavchev 1, and A. Karadjov 1

1 National Center of Radiobiology and Radiation Protection, 132 Kliment Uhridsky Boulevard, Sofia 1756, Bulgaria

* To whom correspondence should be addressed.
J. Vassileva, E-mail: j.vassileva{at}ncrrp.org


  Abstract

Results from a Bulgarian patient dose survey in diagnostic radiology are presented. Reference levels for entrance surface dose (ESD) were 0.9 mGy for chest radiography (PA), 30 mGy for lumbar spine (Lat), 10 mGy for pelvis, 5 mGy for skull (AP), 3 mGy for skull (Lat) and 13 mGy for mammography. Quality control (QC) programmes were proposed for various areas of diagnostic radiology. Film processing QC warranted special attention. Proposed QC programmes included parameters to be tested, level of expertise needed and two action levels: remedial and suspension. Programmes were tested under clinical conditions to assess initial results and draw conclusions for further QC system development. On the basis of international experience, measurement protocols were developed for all parameters tested. QC equipment was provided as part of the PHARE project. A future problem for QC programme implementation may be the small number of medical physics experts in diagnostic radiology.


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