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3D printed customized bolus for intensity-modulated radiotherapy in a patient with nasal radiotherapy
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| R. Song, W. Li |
| Department of Radiotherapy, Tianmen First People’s Hospital, Tianmen 431700, Hubei, China , 609987176@qq.com |
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Abstract: (88 Views) |
Background: The aim of the study was to compare the dose differences between 3D-printed bolus, commercial bolus (wax), thermoplastic mask bolus and bolus-free head phantoms simulating nose radiotherapy. Materials and Methods: We used 3D printing technology to make a 3D-printed bolus. To evaluate the clinical feasibility, intensity-modulated radiation therapy (IMRT) plans were created for head phantoms that were 3D-printed bolus, commercial bolus (wax), thermoplastic mask bolus or bolus-free. Dosimetry differences were compared in simulating nose radiotherapy. Results: For the PTV of all the plans, 3D-printed bolus, commercial bolus (wax) and thermoplastic masks bolus had lower Dmax and D1% than the plan without the bolus; for Dmean and D95%, the results were the opposite. For V90%, V95%, V100% and HI, the plan with the 3D-printed bolus was better than the others, and the plan without the bolus was the worst. Conclusions: The dosimetric differences of 3D-printed bolus, commercial bolus (wax), thermoplastic mask bolus and bolus-free were compared in head phantoms simulating nose radiotherapy. The 3D-printed bolus was good for fit, had a high level of comfort and repeatability, and also had better dose parameters in IMRT plans. |
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| Keywords: 3D-printed bolus, commercial bolus, IMRT, head phantoms, Dosimetric. |
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Full-Text [PDF 758 kb]
(108 Downloads)
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Type of Study: Technical Note |
Subject:
Radiation Biology
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