Assessment of Effective Dose in Nuclear Medicine Department Staff and Evaluation of Radiation Safety Measures at K Hospital

Abstract

Introduction: Radiation diagnostic and treatment techniques are being widely deployed, which raises concerns about risks and protecting patients and medical staff. Up to nown, there has been no researchs in Vietnam on the effective dose received by nuclear medicine department staff.
Objective: This study surveys and compares the average effective dose of each group of medical staff by job position, and evaluates the current status of radiation safety measures at K hospital.
Methods: The research subjects were 26 medical staff at the nuclear medicine department: Doctors, Technicians and Nurses. Research data on 3 dose quantities Hp(10), Hp(3) and Hp(0.07) on OSL personal dosimeter type Inlight model 2 from January 2022 to December 2023. The personal dosimeter is worn on the upper left side of the chest. Data processing with MS Excel and SPSS 27.0. Research methods: retrospective, crosssectional description.
Result: The average effective dose of the group of doctors, technicians and nurses in charge of the machine room, nurses in charge of the patient room measured at a depth of 10mm Hp(10), 3mm Hp(3), 0.07mm Hp (0.07) are 0,20±0,02, 0,20±0,02, 0,19±0,02 mSv; 0,28±0,03, 0,28±0,03, 0,27±0,03 mSv; 0,23±0,01, 0,23±0,02, 0,23±0,02 mSv respectively. Individual dose at subcutaneous depth of 10mm Hp(10), 3mm
Hp(3), 0.07mm Hp(0.07), respectively, the average effective dose of the group of technicians and nurses in charge of the machine room higher than the group of doctors 1.40; 1.40 and 1.47 times, the average effective dose of the group of technicians and nurses in charge of the machine room is higher than the group of nurses in charge of the hospital room 1.22; 1.22 and 1.22 times, the average effective dose of the nursing group in charge of the hospital room is higher than the doctor group 1.15; 1.15 and 1.15 times.
Conclusion: With current reality and workload, the radiation exposure level of medical staff at the Department of Nuclear Medicine of K Hospital is below the annual limit for radiation staff and the Department of Medicine, K
Hospital facility basically fully meets radiation safety principles.