Visual impact of infill percentages for 3D printed radiologic simulators
DOI:
https://doi.org/10.15392/bjrs.v8i1A.919Keywords:
3d printing, radiological simulator, computed tomography, phantomAbstract
The function of a simulator is to attenuate the radiation mimicking the different tissues of the human body. This study seeks to verify specifically one of the printing parameters, filling, in the final homogeneity of printed samples as the infill affects costs, print time and resultant attenuation to radiation. Sixteen cubes with 8 cm³ of each type of filament were printed in PLA with 27.5 ± 2.5% copper (Cu) and ABS with infill variation from 15% to 90% in steps of 5%. The cubes were irradiated in a Phillips Brilliance CT 6 with 120kV, 200mA in 0.4mm slices and reconstructed with Standard filter. Each cube had the mean values of Hounsfield Units (HU) and standard deviation (SD) determined in a Region of Interest (ROI). Visually, the inner reticulate of each cube was evaluated by counting line pairs per millimeter (lp/ mm) through the DICOM Weasis viewer. It was observed that the HU values presents a linear behavior in terms of the infill variation. ROI values and line per millimeter are presented. Infill values above 50% for PLA + Cu and 40% for ABS showed a high homogeneity that do not allow differentiation in the line pairs.Values above those percentages are recommended to use in radiological simulators construction. It is suggested to perform this study for each filament, as one more parameter to be taken into account in the construction of radiologic simulators.
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References
Gross, Bethany C., et al. "Evaluation of 3D printing and its potential impact on biotechnology and the chemical sciences." (2014): 3240-3253.
Webb, P. A. "A review of rapid prototyping (RP) techniques in the medical and biomedical sector." Journal of medical engineering & technology 24.4 (2000): 149-153.
Savi, M., et al. "Density comparison of 3D printing materials and the human body." (2017).
Rosa, Maria Eugênia Dela. "Desenvolvimento de um simulador radiográfico homogêneo equivalente ao tórax canino para procedimentos de otimização de imagens radiográficas." (2015).
Mendes, J. M. S., et al. "Development of Object Simulator for Evaluation Periapical Radiographs." World Congress on Medical Physics and Biomedical Engineering, June 7-12, 2015, Toronto, Canada. Springer, Cham, 2015.
Loureiro, E. C. M. Construção de simuladores baseados em elementos de volume a partir de imagens tomográficas coloridas. Diss. Doctoral thesis, 2002.
Harris, Benjamin D., Sanna Nilsson, and Christopher M. Poole. "A feasibility study for using ABS plastic and a low-cost 3D printer for patient-specific brachytherapy mould design." Australasian physical & engineering sciences in medicine 38.3 (2015): 399-412.
Savi, M., et al. "Relationship between infill patterns in 3D printing and Hounsfield Unit."
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Copyright (c) 2020 Brazilian Journal of Radiation Sciences
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