Department of Radiotherapy, Tianmen First People’s Hospital, Tianmen 431700, Hubei, China , 609987176@qq.com
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.
Song R, Li W. 3D printed customized bolus for intensity-modulated radiotherapy in a patient with nasal radiotherapy. Int J Radiat Res 2023; 21 (1) :153-157 URL: http://ijrr.com/article-1-4603-en.html