Aspectos radiológicos e dose de radiação em mamografia de mulheres com implantes mamários

• Autor(a) principal: Couto, Lilian Soares
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/6902
• topic: Câncer de mama; Mamografia; Implante mamário; Proteção radiológica; Breast cancer; Mammography; Breast augmentation; Radiation protection; CIENCIAS DA SAUDE

The main test for early detection of breast cancer is mammography. In the last decade, there was a significant increase in the number of women undergoing mammography for screening of breast cancer and have breast implants. Despite the mammographic screening recommended for patients with implants, follow the same range as recommended for patients doesn’t have implants, routinely includes images with posterior displacement of the implant (ID), known as Eklund’s maneuver, adding four views in relation to who do not have it. This study aimed to evaluate the mammographic characteristics of the required views and the dose that these patients have received in the examination. Data collection was divided into two stages: the first, for radiological evaluation of images and the second for data collection of radiographic techniques for image production. The radiological evaluation was performed by radiologists, with experience in mammography reading, who independently answered a questionnaire about: 1) implant position, 2) overall improvement image, 3) amount of breast tissue seen in the maneuver in relation to the standard images, 4) if there were findings in the exams, e) which view these findings were seen. For the data of the mammographic techniques, from the records in the DICOM (Digital Imaging and Communications in Medicine) heading of each image were collected: voltage (kV) and current x time (mAs) emitted by the device, target/filter combination, breast thickness and mean glandular dose (DGM). The data were analyzed by means of statistical treatment. Regarding the radiological evaluation, the evaluators agreed that the amount of breast tissue in the in the ID views depends on the position of the implant and is smaller in the retroglandular position. There was a significant increase in the quality of the images with the displacement of the implant and there were no findings seen in the exams, which were not seen in those views. Regarding the radiation doses received by patients with implants, during the mammographic examination, the DGM exceeds the limit recommended by the agencies responsible for the protocols. This study suggests the need for continuity of the research, with an increase in the sample and optimization of the mammographic technique, in order to evaluate the risk benefit ratio of maintaining all views of augmentation mammograms.