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Radiation Protection Dosimetry Advance Access originally published online on February 18, 2007
Radiation Protection Dosimetry 2007 124(2):181-186; doi:10.1093/rpd/ncm143
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Dose-area product measurements and determination of conversion coefficients for the estimation of effective dose in dental lateral cephalometric radiology

H. K. Looe1,2,*, F. Eenboom1,2, N. Chofor1,2, A. Pfaffenberger1,2, M. Sering3, 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 September 26, 2006, amended November 24, 2006, accepted December 22, 2006

A study has been carried out to propose diagnostic reference levels (DRLs) for lateral cephalometric radiology in Germany based on the dose-area product (DAP). DRLs were proposed separately for child and adult exposure settings which are 26.4 and 32.6 mGy cm2, respectively. Organ absorbed doses from lateral cephalometric radiology were also measured using thermoluminescence detectors (TLDs) and an adult anthropomorphic phantom specially design for dosimetric study in dental radiology. Effective doses were then calculated using three different techniques where the salivary gland and brain tissue were given different weighting factors. Conversion coefficients for estimating effective dose from DAP value derived in this study range from 0.042 to 0.149 µSv/mGy cm2.


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H. K. Looe, F. Eenboom, N. Chofor, A. Pfaffenberger, M. Steinhoff, A. Ruhmann, A. Poplawski, K. Willborn, and B. Poppe
Conversion coefficients for the estimation of effective doses in intraoral and panoramic dental radiology from dose-area product values
Radiat Prot Dosimetry, September 1, 2008; 131(3): 365 - 373.
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