Visual impact of infill percentages for 3D printed radiologic simulators

Authors

  • Marco Antônio Bertoncini Andrade Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina
  • Ana Paula Chaise Fin
  • Caroline de Oliveira Alves
  • Flávio Augusto Penna Soares Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina
  • Matheus Brum Marques Bianchi Savi Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina
  • Maria da Penha Albuquerque Potiens Instituto de Pesquisas Energéticas Nucleares

DOI:

https://doi.org/10.15392/bjrs.v8i1A.919

Keywords:

3d printing, radiological simulator, computed tomography, phantom

Abstract

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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Author Biography

Marco Antônio Bertoncini Andrade, Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina

Radiology Technologist 

Master Degree in radiological Protection - IFSC

Lab assistant.

References

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Savi, M., et al. "Relationship between infill patterns in 3D printing and Hounsfield Unit."

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Published

2020-06-24

How to Cite

Bertoncini Andrade, M. A., Chaise Fin, A. P., de Oliveira Alves, C., Penna Soares, F. A., Brum Marques Bianchi Savi, M., & Albuquerque Potiens, M. da P. (2020). Visual impact of infill percentages for 3D printed radiologic simulators. Brazilian Journal of Radiation Sciences, 8(1A (Suppl.). https://doi.org/10.15392/bjrs.v8i1A.919