Feasibility of clinical electron beam formation using polymer materials produced by fused deposition modeling

Miloichikova, I. A.; Bulavskaya, A.A.; Cherepennikov, Yu.M.; Gavrikov, Boris Mikhailovich; Gargioni, E.; Belousov, Dmitrij A.; Stuchebrov, S G

doi:10.1016/j.ejmp.2019.07.014

Cited by 10 publications

(10 citation statements)

References 37 publications

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“…In order to study the electron scattering effect at the edge of the ABS absorber, we analyzed the dose profile at the boundary between the primary beam and the one passing through the absorber. Our previous research [12] has shown the electron beams of 6, 12, and 20 MeV are completely absorbed when the ABS plastic absorber is at least 4.0 cm, 7.5 cm, and 10.5 cm thick, respectively. The electron beam is considered completely absorbed when the dose level does not exceed the background value.…”

Section: Resultsmentioning

confidence: 95%

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Influence of 3D-printed collimator thickness on near-the-edge scattering of high-energy electrons

et al. 2020

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In this research, we study how the thickness of a 3D-printed collimator affects highenergy electron scattering. As part of this work, an ABS plastic absorber was produced by fused deposition modeling. Dose distributions at the boundary of the plastic absorber were experimentally observed for 6, 12, and 20 MeV electron beams. For plastic absorber thicknesses of up to 3 cm, dose "hot spots" are observed at the boundary between the primary beam and the beam that has passed through the absorber for 12 and 20 MeV electrons. However, no additional scattering is observed at the absorber edges for the thicknesses of plastic collimators above the minimum thickness providing the total absorption of electron beams (≥ 4 cm for 6 MeV electrons, ≥ 8 cm for 12 MeV electrons, and ≥ 10 cm for 20 MeV electrons). The experiments show that 3D printing is a useful tool for modulating high energy electron beams, for example, in the field of medical physics.

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Section: Resultsmentioning

confidence: 95%

“…In our previous research [12], we proposed 3D-printing patient-specific collimators and showed that this solution does not have the limitations typical of the approaches based on metal melting and casting and, at the same time, allows for efficient absorption of high-energy electrons.…”

Section: Introductionmentioning

confidence: 99%

Influence of 3D-printed collimator thickness on near-the-edge scattering of high-energy electrons

et al. 2020

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“…Another study [14] compared 3D-printed boluses with standard boluses. The results indicate the effectiveness of using plastic materials for bolus manufacturing [13,14].…”

Section: Introductionmentioning

confidence: 76%

“…These devices consist of tissue-equivalent materials and allow for the desired depth dose distribution on the surface, which is crucial for electron beam therapy. Previous study [13] has proposed the use of 3D-printed plastic objects for this purpose and investigated the properties of electron beam interaction with such samples. Another study [14] compared 3D-printed boluses with standard boluses.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of electron beam depth dose distribution in water phantom passed through modified plastic materials

Grigorieva,

Bulavskaya,

Bushmina

et al. 2023

J. Phys.: Conf. Ser.

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The aim of the study is to evaluate the feasibility of using modified plastics for 3D printing of boluses for electron beam therapy. Filaments for 3D printing made from plastic materials with an admixture of copper were studied. Test samples were made from these filaments and investigated. Mathematical models of such products were created based on the obtained data. The thicknesses of the boluses made from each modified material were calculated to achieve the same electron beam depth dose distribution in the water phantom as natural plastic. Using a the developed model of a therapeutic electron beam and newly created models of test object materials, the electron beam depth dose distributions in the water phantom that passed through the materials under study were obtained in bolus geometry. The results of the work demonstrate the potential of using modified plastics for creating forming elements in electron beam therapy. The application of this plastic samples for electron beam shaping with individual configuration allows to modify the irradiation field based on the clinical tasks quickly and efficiently and to increase the effectiveness of electron beam radiotherapy procedures.

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“…Current values of dose were recorded each second ( D i ). Total dose in samples was determined taking into account the deep dose distribution of 6 MeV electron beam in 3D-printed plastic media [34] by integrating and equals 1.5 kGy for each sample. Dose rate is measured by clinical dosimeter UNIDOS E with Markus type 23343 plane-parallel ionization chamber located in adapter plate of solid state phantom RW3 [36][37][38].…”

Section: Irradiation Of Test Samplesmentioning

confidence: 99%

Changes in the physical and structural properties of 3D-printed plastic samples under radiation exposure by nearly therapeutic dose

et al. 2020

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In this research, we study changes of 3D-printed samples made of PLA, ABS, and HIPS plastics under irradiation by 6 MeV electron beam in air with doses up to 1.5 kGy. We compared mechanical and structural properties of original and irradiated plastic samples. It is shown that absorption of the electron beam is not changing during irradiation process for all samples. Mechanical testing revealed no changes in the compressive stress, elastic modulus and bending stress for PLA, ABS and HIPS samples after irradiation. Testing demonstrates that thermograms of investigated polymers before and after irradiation do not have notable difference. However, polylactide glass transition peak (142-154 • C) is better distinguishable for irradiated sample of PLA plastic. The irradiated polymers demonstrate slight differences in Fourier-transform infrared (FTIR) spectra. Experimental results allow concluding that 3D-printed samples made of PLA, ABS, and HIPS plastic are capable to retain their properties under high energy electron beam irradiation with doses up to 1.5 kGy.

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Feasibility of clinical electron beam formation using polymer materials produced by fused deposition modeling

Cited by 10 publications

References 37 publications

Influence of 3D-printed collimator thickness on near-the-edge scattering of high-energy electrons

Influence of 3D-printed collimator thickness on near-the-edge scattering of high-energy electrons

Numerical simulation of electron beam depth dose distribution in water phantom passed through modified plastic materials

Changes in the physical and structural properties of 3D-printed plastic samples under radiation exposure by nearly therapeutic dose

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