Investigating the effects of a range shifter on skin dose in proton therapy
Proton treatment may deliver a larger dose to a patient’s skin than traditional photon therapy, especially when a range shifter (RS) is inserted in the beam path. This study investigated the effects of an RS on skin dose while considering RS with different thicknesses, airgaps and materials. First,...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S173857332200448X |
| _version_ | 1828066558777229312 |
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| author | Ming Wang Lei Zhang Jinxing Zheng Guodong Li Wei Dai Lang Dong |
| author_facet | Ming Wang Lei Zhang Jinxing Zheng Guodong Li Wei Dai Lang Dong |
| author_sort | Ming Wang |
| collection | DOAJ |
| description | Proton treatment may deliver a larger dose to a patient’s skin than traditional photon therapy, especially when a range shifter (RS) is inserted in the beam path. This study investigated the effects of an RS on skin dose while considering RS with different thicknesses, airgaps and materials. First, the physical model of the scanning nozzle with RS was established in the TOol for PArticle Simulation (TOPAS) code, and the effects of the RS on the skin dose were studied. Second, the variations in the skin dose and isocenter beam size were examined by reducing the air gap. Finally, the effects of different RS materials, such as polymethylmethacrylate (PMMA), Lexan, polyethylene and polystyrene, on the skin dose were analysed. The results demonstrated that the current RS design had a negligible effect on the skin dose, whereas the RS significantly impacted the isocenter beam size. The skin dose was increased considerably when the RS was placed close to the phantom. Moreover, the magnitude of the increase was related to the thickness of the inserted RS. Meanwhile, the results also revealed that the secondary proton primarily contributed to the increased skin dose. |
| first_indexed | 2024-04-10T23:32:31Z |
| format | Article |
| id | doaj.art-2926534dfda5489595b075a826009817 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-04-10T23:32:31Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-2926534dfda5489595b075a8260098172023-01-12T04:18:42ZengElsevierNuclear Engineering and Technology1738-57332023-01-01551215221Investigating the effects of a range shifter on skin dose in proton therapyMing Wang0Lei Zhang1Jinxing Zheng2Guodong Li3Wei Dai4Lang Dong5Chengdu University of Technology, Chengdu, 610059, China; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, China; Corresponding author. Chengdu University of Technology, Chengdu, 610059, China.Chengdu University of Technology, Chengdu, 610059, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, ChinaChengdu University of Technology, Chengdu, 610059, ChinaChengdu University of Technology, Chengdu, 610059, ChinaChengdu University of Technology, Chengdu, 610059, ChinaProton treatment may deliver a larger dose to a patient’s skin than traditional photon therapy, especially when a range shifter (RS) is inserted in the beam path. This study investigated the effects of an RS on skin dose while considering RS with different thicknesses, airgaps and materials. First, the physical model of the scanning nozzle with RS was established in the TOol for PArticle Simulation (TOPAS) code, and the effects of the RS on the skin dose were studied. Second, the variations in the skin dose and isocenter beam size were examined by reducing the air gap. Finally, the effects of different RS materials, such as polymethylmethacrylate (PMMA), Lexan, polyethylene and polystyrene, on the skin dose were analysed. The results demonstrated that the current RS design had a negligible effect on the skin dose, whereas the RS significantly impacted the isocenter beam size. The skin dose was increased considerably when the RS was placed close to the phantom. Moreover, the magnitude of the increase was related to the thickness of the inserted RS. Meanwhile, the results also revealed that the secondary proton primarily contributed to the increased skin dose.http://www.sciencedirect.com/science/article/pii/S173857332200448XProton therapy facilityRange shifterSkin doseAirgap |
| spellingShingle | Ming Wang Lei Zhang Jinxing Zheng Guodong Li Wei Dai Lang Dong Investigating the effects of a range shifter on skin dose in proton therapy Nuclear Engineering and Technology Proton therapy facility Range shifter Skin dose Airgap |
| title | Investigating the effects of a range shifter on skin dose in proton therapy |
| title_full | Investigating the effects of a range shifter on skin dose in proton therapy |
| title_fullStr | Investigating the effects of a range shifter on skin dose in proton therapy |
| title_full_unstemmed | Investigating the effects of a range shifter on skin dose in proton therapy |
| title_short | Investigating the effects of a range shifter on skin dose in proton therapy |
| title_sort | investigating the effects of a range shifter on skin dose in proton therapy |
| topic | Proton therapy facility Range shifter Skin dose Airgap |
| url | http://www.sciencedirect.com/science/article/pii/S173857332200448X |
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