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Updated: Feb 9, 2026
08:34
Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
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Efficient double-scattering proton therapy with a patient-specific bolus
Wei Zou1, Brendan Burgdorf1, Ning J Yue2
1Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA 19104, United States.
Summary
A novel patient-specific bolus can replace traditional compensators in passive scattering proton therapy. This innovation streamlines treatment delivery, reducing time and costs associated with compensator use.
Area of Science:
- Medical Physics
- Radiation Oncology
Background:
- Passive scattering proton radiotherapy uses compensators for precise dose shaping.
- Compensators require manual placement, increasing treatment time and risks.
Purpose of the Study:
- To investigate a single patient-specific bolus as an alternative to multi-field compensators.
- To enhance treatment delivery efficiency in proton therapy.
Main Methods:
- Ray-tracing converted compensator data to bolus thickness.
- A single patient-specific bolus was designed and milled.
- Dosimetric equivalence was assessed using 3D Gamma analysis and film measurements.
Main Results:
- Calculated and measured dose distributions confirmed equivalence between compensator and bolus plans.
- The novel bolus approach demonstrated dosimetric equivalency in phantom and clinical cases.
Conclusions:
- A single patient-specific bolus can effectively replace compensators in passive scattering proton therapy.
- This method offers potential benefits including reduced treatment time, manufacturing costs, and material waste.
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