Avaliação da qualidade da imagem de mamografia em diferentes mamógrafos

Abstract

Image quality control in mammography requires the use of a specific phantom, the ACR phantom. This simulates a 4.5 cm compressed glandular/adipose breast where it is possible to visualize objects that can be seen in mammographic images. In order to carry out the test correctly and complete the analysis, it is necessary to base oneself on the rules of the phantom manual used, IN 92/2021 and also RDC 611/2022, só that the aim of the project can then be met, assessing whether different digital mammographs using the DR system have the same image quality. When testing and analyzing different digital mammography devices, the results were as expected, with high image quality. Among the mammography machines used, there were two different manufacturers, including different models. In one of the devices, the analysis of fibers, which was one of the structures analyzed, stood out, the device in room 1, Mercês unit. In other structures evaluated, such as microcalcifications, another device from a different supplier provided better results, the device in room 2, Mercês unit. As for tumor masses, all the different mammographs provided the same number of visualizations, analyzing the images obtained using the same phantom used, the one at UTFPR. Even though there were devices that stood out in the analysis, all were within the established limits. This work provided a deeper understanding of image quality control in digital mammography and its relevance, since guaranteeing image quality provides a good view for the doctor and, consequently, a good and truthful diagnosis for the patient.