Quality Control in Breast Tomosynthesis
DOI:
https://doi.org/10.15392/bjrs.v3i1.78Abstract
In Brazil, breast cancer is the most common and the leading cause of death among women, with estimated 57,000 new cases in 2014. The mammography (2D) plays an important role in the early detection of breast cancer, but in some cases can be difficult to detect malignant lesions due overlap of breast tissues. The Digital Breats Tomosynthesis (DBT: 3D) reduces the effects of overlap, providing improved characterization of mammographic findings. However, the dose may double as compared with mammography. This study presents results of Contrast to Noise Ratio (CNR) and image quality evaluation on Siemens mammography equipment Mammomat Inspiration with tomosynthesis. The CNR was determined with Polymethylmethacrylate (PMMA) layers of 20 to 70 mm thick and an aluminum foils of 0,2 mm thickness and area of 10 mm². Image quality was assessed with the ACR Breast Simulator. In the evaluation of image quality, the detectability of fibers and masses was identical in 2D and 3D systems. Displaying fibers were 4,5 and 4 mass in both modes. In 2D mode were identified 3,5 microcalcifications groups, and 3D showed 3 groups. The Mean Glandular Dose (MGD) for the simulator in 2D mode was 1,17 mGy and 2,35 mGy for the 3D mode. The result reinforces the importance of quality control in the process of obtaining the images and obtained in accordance CNR values, ensuring image quality and compatible dose in 2D and 3D processes.
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References
INCA - Instituto Nacional de Câncer José Alencar Gomes da Silva. Estimativa de Câncer em Mamografia. Brasil. 2012. Avaliable at: <http://www.inca.gov.br/estimativa/2012/>. Last accessed: 03 Jul. 2014.
FACINA, T. Estimativa 2014 – Incidência de Câncer no Brasil. Instituto Nacional de Câncer José Alencar Gomes da Silva (INCA). Revista Brasileira de Ocologia, vol. 60, p. 63-64, 2014.
SVAHN, T.M.; CHAKRABORTY, D.P. ; IKEDA, D.; ZACKISSON, S.; et al., Breast tomossinthesys and digital mammography:a comparison of diagnostic accuracy, The British Journal of Radiology, v.85, p. 1074-1082, 2012.
SOUZA, R. T. F.; PNA, D. R.; ALVAREZ, M.; VELO, A.F.; et al. Quantificação de tecidos em imagens por meios de histogramas, Revista Brasileira de Física Médica, vol. 6, n 2, p. 173-177, 2012.
URBAN, L. A. B. D.; SCHAEFER, M. B.; DUARTE, D. L.; SANTOS, R. P. ; et al., Recomendações do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem, da Sociedade Brasileira de Mastologia e da Federação Brasileira das Associações de Ginecologia e Obstetrícia para rastreamento do câncer de mama por método de imagem. Revista de Radiologia Brasileira de Engenharia, Vol. 45. n. 6, p. 334-339, 2012.
BOUWMAN, R. W.; DIAZ, O.; ENGEN, R.E.V.; YOUNG, K. C.; et al., Phantoms for quality control procedures in digital breast tomosynthesys: dose assessment, Physics in Medicine and Biology – IOP Publishing, vol. 50, p. 4423-4438, 2013.
NHSBSP - National Health Service Breast Screening Programme. Thechnical Evaluation of Siemens Mammomat Inspiration Digital Breast Tomosinthesys System. Equipment Re-port 1306. NHSBSP, 2013 a.
EUREF - National Expert and Training Centre for Breast Cancer Screening. Protocol for the Quality Control and Techinical Aspects of Digital Breast Tomosynthesis Systems. Na-tional Expert and Training Centre for Breast Cancer Screening, Radbound University Nijimegen Medical Centre: EUREF, 2013.
YOUNG, K. C.; COOK, J. J. H.; ODUKO, J. M.; BOSMANS, H.; Comparison of software and human observers in reading images of the CDMAM test object to assess digital mam-mography systems. In Proceedings of SPIE, Medical Imaging, vol. 6142, p. 1-13, 2006.
BRASIL. Calculando Amplitude, Variância e Desvio Padrão. 2014. Available at: <http://www.devmedia.com.br/calculando-amplitude-variancia-e-desvio-padrao-no-oracle>. Last accessed: 03 Jul. 2014.
MS - Ministério da Saúde. Secretaria de Vigilância Sanitária, Regulamento técnico. Diretrizes de proteção radiológica em radiodiagnóstico médico e odontológico. Portaria nº 453, Brasília, 1998. 36p.
JAKUBIAK, R. R. Qualidade de imagem, limiar de contraste e dose glandular média e mamografia digital CR, Dissertação, Universidade Tecnológica Federal do Paraná, 2013.
INCA, MS. Mamografia da Prática ao Controle, Rio de Janeiro: Ministério da Saúde, 2007.
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