Dosimetric and Delivery Assessment of Stereotactic Body Radiotherapy Using Flattened and Unflattened Beams for the Single-Isocenter Treatment of Multiple Liver Targets

Key Points

• This research aims to assess the dosimetric performance and treatment delivery of stereotactic body radiotherapy with different beam types.
• Compared dosimetric data between flattened and unflattened beams for liver targets.
• Evaluated beam-on time for treatment sessions with different beam types.
• Implemented breath-hold techniques to measure efficiency.
• Flattening filter-free beams reduced beam-on time significantly in certain scenarios.
• Higher dose rates with 10FFF did not lead to decreased overall treatment time.