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Radiation Protection Dosimetry Advance Access published online on February 18, 2007
Radiation Protection Dosimetry, 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
Received September 26, 2006
Revised November 24, 2006
Accepted December 22, 2006

SCIENTIFIC AND TECHNICAL PAPER

DOSE-AREA PRODUCT MEASUREMENTS AND DETERMINATION OF CONVERSION COEFFICIENTS FOR THE ESTIMATION OF EFFECTIVE DOSE IN DENTAL LATERAL CEPHALOMETRIC RADIOLOGY

H. K. Looe 1 *, F. Eenboom 1, N. Chofor 1, A. Pfaffenberger 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

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.
[Abstract] [Full Text] [PDF]


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