Zoran Mirkov1, Katarina M Rajković2, Jovan B Stanković3, Dario Faj4,5. 1. Serbian Institute of Occupational Health "Dr Dragomir Karajovic", Belgrade, Serbia. 2. Department of Kruševac, Shumadia Academy of Professional Studies, Kruševac, Serbia. 3. Academy for Applied Studies Belgrade - The College of Health Sciences, Zemun, Serbia. 4. Faculty of medicine Osijek, University of Osijek, Osijek, Croatia. 5. Faculty of dentalmedicine and health, University of Osijek, Osijek, Croatia.
Abstract
OBJECTIVES: The aim of this paper is to determine the empirical formula for calculating the incident air kerma (Ki), used as a patient dose descriptor in the intraoral radiographic imaging. METHODS: The data for the formula were collected during the regular annual inspection of intraoral dental X-ray units in 2018, 2019 and early 2020. The measurement data of 50 X-ray units were processed to develop the formula. Exposure factors for imaging molars of the upper jaw of an average patient in a clinical setting were used in the measurement. The formula validity was statistically evaluated using coefficient of correlation, standard error of the fitted function and the mean relative percentage deviation. RESULTS: The measurement values of the radiation doses and calculated values obtained by using the final formula showed good agreement - the mean relative percentage deviation values less than ±15%. CONCLUSIONS: Although there are differences in X-ray units, voltages, manufacturers and device architectures (single-phase and high-frequency), the measurement data comply well with computed ones in all cases.
OBJECTIVES: The aim of this paper is to determine the empirical formula for calculating the incident air kerma (Ki), used as a patient dose descriptor in the intraoral radiographic imaging. METHODS: The data for the formula were collected during the regular annual inspection of intraoral dental X-ray units in 2018, 2019 and early 2020. The measurement data of 50 X-ray units were processed to develop the formula. Exposure factors for imaging molars of the upper jaw of an average patient in a clinical setting were used in the measurement. The formula validity was statistically evaluated using coefficient of correlation, standard error of the fitted function and the mean relative percentage deviation. RESULTS: The measurement values of the radiation doses and calculated values obtained by using the final formula showed good agreement - the mean relative percentage deviation values less than ±15%. CONCLUSIONS: Although there are differences in X-ray units, voltages, manufacturers and device architectures (single-phase and high-frequency), the measurement data comply well with computed ones in all cases.
Entities:
Keywords:
Air kerma; Dental x-ray; Intraoral; Ionising Radiation
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