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Polar-coordinated contour processing algorithm in optimizing SCART treatment volume
Junqi Song1, Japan Patel2, Weihua Qi3
1State Key Laboratory of Mechanics and Control for Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China.
Frontiers in Oncology
|June 1, 2026
Summary
A new algorithm streamlines Stereotactic Centralized Ablative Radiation Therapy (SCART) planning by automating the generation of SCART Treatment Volumes (STVs). This innovation enhances efficiency and improves STV quality for better tumor control and normal tissue preservation.
Area of Science:
- Radiation Oncology
- Medical Physics
Background:
- Spatially Fractionated Radiation Therapy (SFRT) offers superior tumor control and normal tissue sparing.
- Stereotactic Centralized Ablative Radiation Therapy (SCART) is an SFRT technique for bulky tumors.
- Manual generation of SCART Treatment Volumes (STVs) is time-consuming and suboptimal.
Purpose of the Study:
- To develop an automated algorithm for generating STVs.
- To improve the efficiency and quality of SCART treatment planning.
Main Methods:
- A novel algorithm utilizing polar-coordinated calculations was developed.
- The algorithm automates STV generation based on Gross Tumor Volume (GTV).
Main Results:
- The algorithm reduced planning time by approximately 90%.
- STVs generated by the algorithm showed a 15% volume increase and enhanced conformality compared to manual contours.
- The need for recontouring was minimized.
Conclusions:
- The proposed algorithm significantly improves the efficiency and reproducibility of SCART planning.
- Automated STV generation leads to more optimal treatment volumes.
- This method supports better outcomes in SCART for radiation oncology.
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