Occupational radiation monitoring practices in the southwest region of Pakistan

Abstract

Background & Aims: The article aims to evaluate trends in occupational radiation exposure for employees in different departments at the Center for Nuclear Medicine and Radiotherapy (CENAR), Quetta, Pakistan. Materials & Methods: This retrospective study examination of 9780 film dosimeter dose data was carried out from 2019 to 2023. The quantities analyzed were the highest and minimum annual effective doses, distribution of workers, and their average yearly effective doses in different effective dose intervals. The annual collective effective dose and average effective dosage were also included. Results: Yearly average effective doses in Radiotherapy, Nuclear Medicine, Medical Physics, and Diagnostic Radiology range from 0.5 to 3.00 mSv. Records show that 90% of workers fall within 1-3.00 mSv, with 10% between 0.5 mSv and the minimum detectable level. Minimum and maximum yearly individual doses in Radiotherapy and Nuclear Medicine are 0.10 mSv and 2.3 mSv. Average doses for the fields range from 1.01 to 1.14 mSv. Conclusion: Employees received doses that were lower than the yearly maximum, showing successful radiation shielding. The findings imply that safety measures are followed in the researched departments, which is important for clinical practice. This research improves our understanding of occupational radiation exposure, notably at CENAR, and promotes radiation safety in medical settings.

Keywords

• annual dose
• distance shielding
• occupational radiation
• radiation protection
• radioactive sources
• time