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Radiation Protection Dosimetry Advance Access published online on June 17, 2006
Radiation Protection Dosimetry, doi:10.1093/rpd/ncl071
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received December 19, 2005
Revised February 24, 2006
Accepted April 30, 2006

SCIENTIFIC AND TECHNICAL PAPER

RADIATION EXPOSURE TO CHILDREN IN INTRAORAL DENTAL RADIOLOGY

H. K. Looe 1 *, A. Pfaffenberger 1, N. Chofor 1, F. Eenboom 1, M. Sering 2, A. Rühmann 3, A. Poplawski 3, K. Willborn 3, and B. Poppe 1

1 Medical Radiation Physics Working Group, Carl von Ossietzky University Oldenburg, 26111 Oldenburg, Germany; Clinic of Radiotherapy and Oncology, Pius-Hospital, Georgstrasse 12, 26121 Oldenburg, Germany
2 Öko-Institut e.V., Darmstadt Office, Nuclear Engineering & Plant Safety Division, Rheinstrasse 95, 64295 Darmstadt, Germany
3 Clinic of Radiotherapy and Oncology, Pius-Hospital, Georgstrasse 12, 26121 Oldenburg, Germany

* To whom correspondence should be addressed.
H. K. Looe, E-mail: hui.k.looe{at}uni-oldenburg.de


  Abstract

In this study, dose area product (DAP) measurements have been performed aiming at establishing diagnostic reference levels (DRLs) in paediatric intraoral dental radiology. Measurements were carried out at 52 X-ray units for all types of intraoral examinations performed in clinical routine. Not all X-ray units have pre-set child exposure settings with reduced exposure time or in some cases lower tube voltage. Child examinations are carried out using adult exposure settings at these units, which increases the DAP third quartile values by up to 50%. For example, third quartile values for periapical examination ranges from 14.4 to 40.9 mGy cm2 for child settings and 20.6 to 48.8 mGy cm2 when the adult settings are included. The results show that there exists a large difference between the patient exposures among different dental facilities. It was also observed that clinics working with faster film type or higher tube voltage are not always associated with lower exposure.


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