Controle de qualidade dos ativímetros nos serviços de medicina nuclear

Abstract

This work aimed to provide a description and explanation of the various quality control tests that are carried out on activity meters, equipment that is frequently used in procedures that will be carried out in Nuclear Medicine. These test procedures are carried out in accordance with the CNEN 3.05 standard, but the standard was found to need to be updated. In the repeatability test in its description, it brings redundancy, since the concepts are similar to the accuracy test. Other flaws found in the standard are that it does not provide references for tests, making it necessary in some cases to search international documents to be able to carry out an effective test. In some cases, the Brazilian standard brings a much higher limit than is seen in other reference standards, such as TRS 454, AAPM 118. For example, the accuracy test, while in CNEN 3.05 it brings ± 5%, international standards bring ± 1%, this can directly influence the dose that will be injected into the patient, which is why there is a need to align with international practices, with the aim of reducing exposure to both patients and nuclear medicine workers.