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- W2617300125 abstract "Purpose This study evaluates the radiological properties of different 3D printing materials for a range of photon energies, including kV and MV CT imaging and MV radiotherapy beams. Methods The CT values of a number of materials were measured on an Aquilion One CT scanner at 80 kVp, 120 kVp and a Tomotherapy Hi Art MVCT imaging beam. Attenuation of the materials in a 6 MV radiotherapy beam was investigated. Results Plastic filaments printed with various infill densities have CT values of −743 ± 4, −580 ± 1 and −113 ± 3 in 120 kVp CT images which approximate the CT values of low-density lung, high-density lung and soft tissue respectively. Metal-infused plastic filaments printed with a 90% infill density have CT values of 658 ± 1 and 739 ± 6 in MVCT images which approximate the attenuation of cortical bone. The effective relative electron density REDeff is used to describe the attenuation of a megavoltage treatment beam, taking into account effects relating to the atomic number and mass density of the material. Plastic filaments printed with a 90% infill density have REDeff values of 1.02 ± 0.03 and 0.94 ± 0.02 which approximate the relative electron density RED of soft tissue. Printed resins have REDeff values of 1.11 ± 0.03 and 1.09 ± 0.03 which approximate the RED of bone mineral. Conclusions 3D printers can model a variety of body tissues which can be used to create phantoms useful for both imaging and dosimetric studies." @default.
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- W2617300125 date "2017-06-01" @default.
- W2617300125 modified "2023-10-18" @default.
- W2617300125 title "Radiological properties of 3D printed materials in kilovoltage and megavoltage photon beams" @default.
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- W2617300125 doi "https://doi.org/10.1016/j.ejmp.2017.05.051" @default.
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