Optical Density Measurement for Absorbed Dose Estimation to Enhance Quality Assurance and Quality Control in Dental Radiography using Dental Radiographs

International Journal of Medical Science

© 2019 by SSRG - IJMS Journal

Volume 6 Issue 9

Year of Publication : 2019

Authors : Oladotun Ayotunde Ojo, Peter Adefisoye Oluwafisoye , Charles Okechukwu Chime

10.14445/23939117/IJMS-V6I9P103

How to Cite?

Oladotun Ayotunde Ojo, Peter Adefisoye Oluwafisoye , Charles Okechukwu Chime, "Optical Density Measurement for Absorbed Dose Estimation to Enhance Quality Assurance and Quality Control in Dental Radiography using Dental Radiographs," SSRG International Journal of Medical Science, vol. 6,  no. 9, pp. 8-18, 2019. Crossref, https://doi.org/10.14445/23939117/IJMS-V6I9P103

Abstract:

X – ray imaging and its application should be closely monitored and controlled, so that only safe amounts or doses is put to use at all times. This will guide against excess dose to patients or personnel during the cause of any exposure, as it is applied. This study presents the measurement of optical densities of dental radiographs, of two hospitals, namely St. Bridget hospital and University of Benin Teaching Hospital (UBTH), both in Benin City, Edo State, Nigeria, with the aid of a densitometer, model MA 5336. The measured optical densities were used to estimate the X – ray radiation absorbed dose to patients undergoing the dental X – ray, for the purpose of Quality Assurance (QA) and Quality Control (QC). Fifty (50) adult samples of dental radiographs were collected per hospital, making a total of one hundred (100) for both hospitals. The optical densities were measured five times at different spots across the image of each of the dental radiographs and the mean were obtained, in other to estimate the absorbed dose. The results obtained showed that for St. Bridget hospital, the mean dose was 0.041 mGy, minimum dose 0.002 mGy, maximum dose 0.0086 mGy, range of dose 0.084 mGy, SD 0.029, Kurtosis 1.423 mGy, 1st Q 0.009, 2nd 0.043 mGy and 3rd Q 0.0067. Results for UBTH showed that mean dose was 0.016 mGy, minimum dose 0.004 mGy, maximum dose 0.062 mGy, range of dose 0.058 mGy, SD 0.011, Kurtosis 6.628, 1st Q 0.008, 2nd Q 0.012 and 3rd Q 0.019. The results were in agreement with those of the International Atomic Energy Agency (IAEA) guidance levels, in X – ray guided medical interventional procedures.

Keywords:

Imaging, Dose, Absorbed Dose, Dental Radiographs, Optical Densities

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