Feasibility of clinical electron beam formation using polymer materials produced by fused deposition modeling
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Feasibility of clinical electron beam formation using polymer materials produced by fused deposition modeling. / Miloichikova, Irina; Bulavskaya, Angelina; Cherepennikov, Yury; Gavrikov, Boris; Gargioni, Elisabetta; Belousov, Dmitrij; Stuchebrov, Sergei.
In: PHYS MEDICA, Vol. 64, 08.2019, p. 188-194.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Feasibility of clinical electron beam formation using polymer materials produced by fused deposition modeling
AU - Miloichikova, Irina
AU - Bulavskaya, Angelina
AU - Cherepennikov, Yury
AU - Gavrikov, Boris
AU - Gargioni, Elisabetta
AU - Belousov, Dmitrij
AU - Stuchebrov, Sergei
N1 - Copyright © 2019. Published by Elsevier Ltd.
PY - 2019/8
Y1 - 2019/8
N2 - The main challenge in electron external beam radiation therapy with clinical accelerators is the absence of integrated systems to form irregular fields. The current approach to provide conformal irradiation is to use additional metallic shaping blocks, with inefficient and expensive workflows. This work presents a simple method to form therapeutic electron fields using 3D printed samples. These samples are manufactured by fused deposition modeling, which can affect crucial properties, such as material homogeneity, due to the presence of residual air-filled cavities. The applicability of this method was therefore investigated with a set of experiments and Monte Carlo simulations aimed at determining the electron depth dose distribution in polymer materials. The results show that therapeutic electron beams with energies 6-20 MeV can be effectively absorbed using these polymeric samples. The model developed in this study provides a way to assess the dose distribution in such materials and to calculate the appropriate thickness of polymer samples for therapeutic electron beam formation. It is shown that for total absorption of 6 MeV electron beams the material thickness should be at least 4 cm, while this value should be at least 8 cm for 12 MeV and 11 cm for 20 MeV, respectively. The results can be used to further develop 3D printing procedures for medical electron beam profile formation, allowing the creation of a collimator or absorber with patient-specific configuration using rapid prototyping systems, thus contributing to improve the accuracy of dose delivery in electron radiotherapy within a short manufacturing time.
AB - The main challenge in electron external beam radiation therapy with clinical accelerators is the absence of integrated systems to form irregular fields. The current approach to provide conformal irradiation is to use additional metallic shaping blocks, with inefficient and expensive workflows. This work presents a simple method to form therapeutic electron fields using 3D printed samples. These samples are manufactured by fused deposition modeling, which can affect crucial properties, such as material homogeneity, due to the presence of residual air-filled cavities. The applicability of this method was therefore investigated with a set of experiments and Monte Carlo simulations aimed at determining the electron depth dose distribution in polymer materials. The results show that therapeutic electron beams with energies 6-20 MeV can be effectively absorbed using these polymeric samples. The model developed in this study provides a way to assess the dose distribution in such materials and to calculate the appropriate thickness of polymer samples for therapeutic electron beam formation. It is shown that for total absorption of 6 MeV electron beams the material thickness should be at least 4 cm, while this value should be at least 8 cm for 12 MeV and 11 cm for 20 MeV, respectively. The results can be used to further develop 3D printing procedures for medical electron beam profile formation, allowing the creation of a collimator or absorber with patient-specific configuration using rapid prototyping systems, thus contributing to improve the accuracy of dose delivery in electron radiotherapy within a short manufacturing time.
U2 - 10.1016/j.ejmp.2019.07.014
DO - 10.1016/j.ejmp.2019.07.014
M3 - SCORING: Journal article
C2 - 31515019
VL - 64
SP - 188
EP - 194
JO - PHYS MEDICA
JF - PHYS MEDICA
SN - 1120-1797
ER -