Treatment Planning Study for Microbeam Radiotherapy Using Clinical Patient Data.

Area of Science:

• Radiation Oncology
• Medical Physics

Background:

• Microbeam radiotherapy (MRT) is an emerging preclinical technique.
• MRT offers potential for reduced normal tissue toxicity at equivalent tumor control rates compared to conventional radiotherapy.

Purpose of the Study:

• To compare doses between MRT and conventional radiotherapy.
• To identify suitable clinical applications for future MRT implementation.

Main Methods:

• Simulated MRT scenarios using clinical patient data and a hybrid Monte Carlo dose calculation algorithm.
• Implemented the equivalent uniform dose (EUD) concept for MRT dose evaluation.
• Investigated scenarios including glioblastoma, lung SBRT, bone metastases, brain metastases, and breast cancer radiotherapy.

Main Results:

• Achieved clinically acceptable treatment plans for most investigated parameters.
• Lung stereotactic body radiotherapy (SBRT) presented the most challenging scenario.
• Demonstrated MRT's capability to achieve acceptable dose distributions using EUD and EQD2 comparison.

Conclusions:

• This study is a significant step towards clinical application of MRT.
• MRT shows potential for improved therapeutic ratios in various clinical scenarios.
• Further research is needed for treatment plan optimization and dose calculation considering tissue microstructure.