Program Information
Patient Specific Bolus with 3D Printing Technology for Electron Radiotherapy
W Zou1*, T Fisher2 , B Swann1 , R Siderits1 , M McKenna1 , A Khan1 , N Yue1 , M Zhang1 , (1) Rutgers University, New Brunswick, NJ, (2) Memorial Medical Center, Modesto, CA.
Presentations
MO-H-19A-3 Monday 5:15PM - 6:00PM Room: 19APurpose: Bolus is widely used in electron radiotherapy to achieve desired dose distribution. 3D printing technologies provide clinicians with easy access to fabricate patient specific bolus accommodating patient body surface irregularities and tissue inhomogeneity. This study presents the design and the clinical workflow of 3D printed bolus for patient electron therapy in our clinic.
Methods: Patient simulation CT images free of bolus were exported from treatment planning system (TPS) to an in-house developed software package. Bolus with known material properties was designed in the software package and then exported back to the TPS as a structure. Dose calculation was carried out to examine the coverage of the target. After satisfying dose distribution was achieved, the bolus structure was transferred in Standard Tessellation Language (STL) file format for the 3D printer to generate the machine codes for printing. Upon receiving printed bolus, a quick quality assurance was performed with patient re-simulated with bolus in place to verify the bolus dosimetric property before treatment started.
Results: A patient specific bolus for electron radiotherapy was designed and fabricated in Form 1 3D printer with methacrylate photopolymer resin. Satisfying dose distribution was achieved in patient with bolus setup. Treatment was successfully finished for one patient with the 3D printed bolus.
Conclusion: The electron bolus fabrication with 3D printing technology was successfully implemented in clinic practice.
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