Research Article
Determination of Radon Level in Residentials Around a Mine Site and Exposure Risk of Population in Burkina Faso
Issue:
Volume 12, Issue 2, June 2026
Pages:
25-30
Received:
30 August 2026
Accepted:
14 September 2026
Published:
28 September 2026
Abstract: Residential radon concentrations vary widely by geographic area. The higher concentration of radon is expected globally in the grounds where uranium, radium and thoron are present. Mining processes like drilling and blasting increase radon release. So the main consequence of exposure to high amount of radon are cancers of respiratory system. Radon enters the human organism mainly through inhaled atmospheric air mainly in houses. Therefore, the concentrations of radon were measured in twenty un (21) houses around the gold mine site of Bissa Golg in the Kuilsé region of Bukina Faso, using the radiation detector PCE-RD 75. Also dose exposure and cancer risk were evaluated. The results showed that activity concentrations of indoor radon in the area ranged between 11.47 to 100.27 Bq/m3. The annual effective doses corresponding to the activity concentrations ranged between 0.69-6.07 mSv with a mean value of 2.97 mSv. This average value of the annual effective dose of radon is lower than the ICRP recommended limit with mitigation required above 10 mSv/yr. The average cancer risk index is 1.04. These results indicate that there is no need remedial action about radon exposure for the population around the studied site.
Abstract: Residential radon concentrations vary widely by geographic area. The higher concentration of radon is expected globally in the grounds where uranium, radium and thoron are present. Mining processes like drilling and blasting increase radon release. So the main consequence of exposure to high amount of radon are cancers of respiratory system. Radon ...
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Research Article
Evaluation of mAs Linearity, kVp Accuracy, and Reproducibility in Selected X-ray Diagnostic Facilities in Freetown
Saidu Kamara*
Issue:
Volume 12, Issue 2, June 2026
Pages:
31-43
Received:
13 September 2026
Accepted:
27 September 2026
Published:
21 October 2026
DOI:
10.11648/j.rst.20261202.12
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Abstract: Quality control in medical radiology is a process used by a regulatory authority to evaluate the performance of a diagnostic X-ray machine, including acceptable limits and the actions necessary to meet regulatory requirements. This study evaluates the radiation dose outputs of X-ray equipment in diagnostic medical hospitals by measuring mAs linearity, kVp accuracy, and reproducibility as quality control parameters to ensure that radiation doses administered to patients meet standard regulatory requirements. Radiation measuring instruments were used in this work to measure mAs, kVp accuracy, and reproducibility outputs for five (5) medical diagnostic X-ray machines. The detector was placed on the couch at a distance of 100 cm from the collimator to take measurements for each parameter under investigation. Dose rate measurements for each parameter were recorded one at a time. The mathematical equations for mAs linearity, kVp accuracy, and reproducibility were used to compute the linearity coefficient, percentage error, and coefficient of variation. The computed figures for mAs linearity for the five X-ray machines show that four (4) passed and one fell below the allowable limit. Data for kVp accuracy indicate that three of the machines are within the allowable limits and two (2) failed, while the calculated values for reproducibility show that only two (2) machines passed the tests. The study generates empirical quality control data rarely reported in X-ray diagnostic centers. It verifies the linearity coefficient, percentage kVp error, and the coefficient of variation with practical knowledge in radiology studies. Additionally, it provides a systematic mathematical approach to compute mAs linearity, kVp accuracy, and reproducibility for teaching radiology in non-diagnostic laboratory settings.
Abstract: Quality control in medical radiology is a process used by a regulatory authority to evaluate the performance of a diagnostic X-ray machine, including acceptable limits and the actions necessary to meet regulatory requirements. This study evaluates the radiation dose outputs of X-ray equipment in diagnostic medical hospitals by measuring mAs lineari...
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