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[Structural Design and Penumbra Analysis of Dynamic Multi-leaf Collimator Leaf End].
Jun Lyu1,2, Liuli Chen3,4, Ruijun Wen3
1Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031.
Summary
This study introduces a novel collimator leaf end structure for dynamic multi-leaf collimators used in precise radiotherapy. The new design enhances radiation beam shaping, improving radiotherapy accuracy and quality.
Area of Science:
- Medical Physics
- Radiation Oncology
Context:
- Dynamic multi-leaf collimators (MLCs) are crucial for precise radiotherapy.
- Accurate radiation beam shaping is essential for effective tumor treatment.
- MLC performance directly impacts radiotherapy accuracy, efficiency, and quality.
Purpose:
- To investigate a new collimator leaf end structure combining circular arc and plane elements.
- To develop a penumbra performance analysis model integrating analytical and graphical methods.
- To quantitatively analyze the impact of leaf end structure on collimator penumbra.
Summary:
- A novel collimator leaf end structure featuring a circular arc and plane combination was designed for dynamic multi-leaf collimators.
- An analysis model was developed using analytical expressions and graphical methods to evaluate penumbra performance.
- The study quantitatively assessed the influence of the leaf end structure on penumbra and completed a 3D design.
Impact:
- The developed structural design and analysis model were validated through experimental measurements.
- This research contributes to improving the accuracy and quality of precise tumor radiotherapy.
- The findings support the advancement of dynamic multi-leaf collimator technology for enhanced cancer treatment.
