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Application report of automatic unlocking baseplate in radiotherapy
Lintao Li1,2, Xianliang Wang1,2, Xin Xin1,2
1Department of Radiation Oncology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
Journal of Applied Clinical Medical Physics
|September 12, 2022
Summary
An improved automatic unlocking baseplate (AUB) enhances safety for head and neck cancer radiotherapy. This device offers reliable performance and meets dose distribution requirements, ensuring patient safety during emergency releases.
Area of Science:
- Medical Physics
- Radiation Oncology
- Biomedical Engineering
Background:
- Radiotherapy for head and neck tumors requires precise immobilization.
- Existing devices may pose risks during emergency release procedures.
- Enhancements in immobilization technology are crucial for patient safety.
Purpose of the Study:
- To improve an existing immobilization device for head and neck cancer radiotherapy.
- To enhance patient safety during emergency release scenarios.
- To verify the clinical applicability of the improved device.
Main Methods:
- Designed an improved automatic unlocking baseplate (AUB).
- Conducted dosimetry comparisons with the Solo Align Full Body System (SAFBS) using dose-attenuation measurements and human simulation.
- Performed clinical application tests in CT simulation and treatment rooms, assessing stability and reliability.
Main Results:
- Dose-attenuation measurements showed minimal differences between AUB and SAFBS.
- Simulation studies indicated lower PTV doses with AUB (D99: 0.39% lower, D90: 0.18% lower).
- Clinical tests demonstrated a 100% success rate in over 5000 emergency unlocks.
Conclusions:
- The AUB offers good functional versatility for head and neck cancer patients.
- The device ensures dose distribution meets radiotherapy requirements.
- The automatic unlocking function proved stable and reliable in clinical settings.
