Assessment of glandular dose and image quality in mammography using computerised radiography employing a polymethylmetacrilate breast simulator (Conference Paper)

摘要

In Brazil there are around 600 mammography equipment with CR system. Taking into account the quality of image is essential to evaluate the mean glandular dose so you can optimize the radiation protection of patients evaluated with this type of system. Therefore, this study aimed to determine the mean glandular dose and quality of image for the CR system of laboratory of radioprotection applied to mammography of the Centre of Development of Nuclear Technology (CDTN). For this, we evaluated the linearity of the detector's response, contrast to noise ratio and signal to noise ratio, which, according to European protocol, showed results within acceptable limits. Next, evaluated the quality of image with the CDMAM Phantom and mean glandular dose to the detector Fluke Biomedical TNT 12000WD, where they presented, respectively, within the results expected by the manufacturer and the limits of acceptable and desirable by the European protocol. then, the CR system of CDTN is optimized.