Impact of using different materials on the modulation transfer function in digital radiological images
DOI:
https://doi.org/10.29384/rbfm.2021.v15.19849001643Keywords:
radiology, quality control, spatial resolutionAbstract
The advancement of digital radiology has provided a significant improvement in the quality of radiological images. This evolution has brought many benefits for diagnosing images, such as the agility of the process, the improvement of the spatial resolution, the reduction of the necessary exposure time, among others. The latest published work has shown that the Modulation Transfer Function (MTF) is the most appropriate technique to evaluate the spatial resolution of digital images, as it presents a more accurate quantitative result. This work aims to evaluate the impact of using different materials to determine spatial resolution through MTF. Different thicknesses of aluminum (Al) and copper (Cu) plates were used to acquire an edge image. MTF was evaluated using the Edge Spread Function (ESF) technique using the ImageJ COQ plug-in. It was concluded that a variety of aluminum thicknesses are applicable for determining spatial resolution through MTF, as well as a collimation test plate.
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2. BUSHBERG, J.T.; SEIBERT, J.A.; LEIDHOLD, E.M.; BOONE, J.M. The Essential Physics of Medical Imaging Lippincott Williams & Wilkins; 3ª edição, 2012, 1031 páginas.
3. BARBARINI, E.S. Análise óptica de sistemas eletro-ópticos por meio do cálculo da função de transferência de modulação. 2012. Dissertação. Universidade de São Paulo, São Carlos.
4. COLARUSSO, P.; KIDDER, L.H.; LEVIN, I.W.; LEWIS, E.N. Encyclopedia of Spectroscopy and Spectrometry: Raman and Infrared Microspectroscopy. Elsevier; 1999, p. 1945-1954.
5. VIEIRA, M.A.C. Metodologia baseada nas funções de transferência para pré-processamento de imagens mamográficas digitais e sua aplicação em esquema computacional de auxílio ao diagnóstico. 2005. Tese. Universidade de São Paulo, São Carlos.
6. MARQUES DA SILVA, A. M., PATROCÍNIO, A. C., & SCHIABEL, H. (2019). Processamento e Análise de Imagens Médicas. Revista Brasileira de Física Médica, 13(1), 34-48. https://doi.org/10.29384/rbfm.2019.v13.n1.p34-48.
7. SAMEI E.; FLYNN, MJ. A method for measuring the presampled MTF of digital radiographic systems using and edge test device. Medical Physics. 1998. Vol. 25, Nº 1, p. 102-113.
8. BRASIL. Ministério da Saúde. Agência Nacional de Vigilância Sanitária. Resolução da Diretoria Colegiada RDC n. 330, de 20 de dezembro de 2019. Brasil: Diário Oficial da União, ano 2019, p. 92 a 107, 26 dez. 2019.
9. BRASIL. MInistério da Saúde. Agência Nacional de Vigilância Sanitária. Instrução Normativa n. 52, de 26 de dezembro de 2019. Brasil: Diário Oficial da União, ano 2019, p.125, 26 de dez. 2019.
10. SCHNEIDER, C.A., RASBAND, W.S., ELICEIRI, K.W. NIH Image to ImageJ: 25 years of image analysis. Nature Methods, Vol. 9, p. 671-675, 2012.
11. BRASIL. Ministério da Saúde. Agência Nacional de Vigilância Sanitária. Portaria nº 453 de 01 de junho de 1998. Diretrizes básicas de proteção radiológica em radiodiagnóstico médico e odontológico. DOU 01/06/1998.
12. MARSHALL, N.W.; MACKENZIE, A.; HONEY I.D. Quality control measurements for digital x-ray detectors. Physics in Medicine and Biology. 2011. Vol 56, p. 979-999.
13. MASCHIO, M.C. Performance Evaluation of Detector for Digital Radiography. 2013-2014. Tese. Alma Mater Studiorum, Universitá di Bologna. Bologna, Itália. Disponível em: https://www.aapm.org/meetings/amos2/pdf/29-7979-41789-512.pdf. Acesso em: 17/11/2020.
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