Evaluation and Statistical Analysis of the Use of Individual Dosimeter by Radiology Professionals in the Municipality of Goiania by Decree SVS/MS Nº 453/1998

Abstract

Occupational exposure can induce a stochastic effect with no dose limit. This means that small doses, even those below the limits, can induce them. Cancer and genetic effects are examples of such effects. Radiology professionals are exposed to small doses of radiation throughout their professional lives, so they must use dosimeters correctly and monitor the doses they receive. Thus, we evaluated the use of personal dosimeters by radiology professionals in Goiania. Through field research, with a descriptive character and a quantitative approach. Using the technique of collecting information based on observation and a questionnaire with closed questions, we sought to assess knowledge of dosimeter use. The subjects of this research were radiology technicians working in Goiania. Five questions were asked of 79 radiology technicians, and they showed that only 37% of the professionals monitored the values of the monthly doses. And 67% knew that they should use it on the lead apron, while in practice, 62% used it correctly. Correct usage of the lead apron is important for estimating the dose equivalent of exposed, unshielded parts. The survey also revealed that 79% of technicians know where to put it after hours. And half of the interviewees use the dosimeter in the most exposed region of the trunk. Thus, we conclude that the use of dosimeters is flawed and that continuing education of professionals exposed to ionizing radiation is necessary to improve the safety of services.