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Radiation Protection Dosimetry Advance Access published online on May 10, 2007
Radiation Protection Dosimetry, doi:10.1093/rpd/ncm175
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

LOCAL DIAGNOSTIC REFERENCE LEVELS FOR SOME COMMON DIAGNOSTIC X-RAY EXAMINATIONS IN TEHRAN COUNTY OF IRAN

Mohammad Taghi Bahreyni Toosi1,* and Mohsen Asadinezhad2

1 Medical Physics Department, Faculty of Medical Physics Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Marshad, Iran
2 Biochemistry and Biophysics Department, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran

* Corresponding author: m-t-bahreyni{at}mums.ac.ir

Received July 20, 2006, amended November 18, 2006, accepted January 25, 2007

Various researchers who have carried out national and international surveys have reported wide variations in patient dose arising from specific X-ray examinations. This study was carried out as a part of a comprehensive project to establish national diagnostic reference level (NDRL), for the first time, in Iran. Seven most common X-ray examinations in 11 projections were included. Thermo luminescence dosimeters (TLD-100) were used to measure entrance surface doses (ESDs). The study group consisted of 535 patients who were referred for X-ray examinations to 12 randomly selected public hospitals in Tehran County. Minimum, median, mean, maximum, first and third quartile values of ESDs are reported. Our results are evident that mean dose values of patients undertaking a specific examination are widely different in various hospitals. Wide dose differences may emerge from complex causes, but in general, low peak kilovoltage and high milli Amperes are associated with higher doses. The results of this work together with further data expected to emerge from the work in progress will provide a useful base to establish Iran's DRLs.


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 Radiat Prot DosimetryHome page
M. Asadinezhad and M. T. Bahreyni Toosi
DOSES TO PATIENTS IN SOME ROUTINE DIAGNOSTIC X-RAY EXAMINATIONS IN IRAN: PROPOSED THE FIRST IRANIAN DIAGNOSTIC REFERENCE LEVELS
Radiat Prot Dosimetry, December 23, 2008; (2008) ncn308v1.
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