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Radiation Protection Dosimetry Advance Access published online on June 11, 2008
Radiation Protection Dosimetry, doi:10.1093/rpd/ncn172
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

CONVERSION COEFFICIENTS FOR THE ESTIMATION OF EFFECTIVE DOSES IN INTRAORAL AND PANORAMIC DENTAL RADIOLOGY FROM DOSE-AREA PRODUCT VALUES

H. K. Looe1,2,*, F. Eenboom1,2, N. Chofor1,2, A. Pfaffenberger1,2, M. Steinhoff3, A. Rühmann2, A. Poplawski2, K. Willborn2 and B. Poppe1,2

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

* Corresponding author: hui.k.looe{at}uni-oldenburg.de

Received February 11, 2008, amended April 28, 2008, accepted May 6, 2008

Conversion coefficients for the estimation of effective doses in intraoral and panoramic dental radiology from dose-area product (DAP) values were determined by measuring organ-absorbed doses and the corresponding DAP values. Measurements were performed for all standard intraoral radiological projections and standard panoramic examination at different exposure parameters. Organ-absorbed doses were measured using thermoluminescent detectors and an adult anthropomorphic phantom specially designed for dosimetric study in dental radiology. Different techniques for the calculation of effective doses were evaluated. Conversion coefficients derived from this study range from 0.008 to 0.132 µSv mGy–1 cm–2 for intraoral radiography and 0.055 to 0.238 µSv mGy–1 cm–2 for panoramic radiography.


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