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Published on: June 7, 2015
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Intrafraction Motion Management With MR-Guided Radiation Therapy.
Martin F Fast1, Minsong Cao2, Parag Parikh3
1Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands.
Seminars in Radiation Oncology
|December 17, 2023
Summary
Magnetic resonance-guided radiotherapy (MRgRT) enhances radiation accuracy by using MRI for real-time imaging without extra radiation. This technology is crucial for managing patient movement during treatment, improving precision for various cancer sites.
Area of Science:
- Medical Physics
- Radiation Oncology
- Radiotherapy Technology
Background:
- High-quality radiation therapy demands precise dose delivery.
- Magnetic resonance-guided radiotherapy (MRgRT) integrates MRI with a linear accelerator.
- MRgRT provides high-quality intra-treatment imaging without additional ionizing radiation exposure.
Purpose of the Study:
- To summarize intrafraction motion sources across diverse disease sites.
- To describe MR imaging techniques for visualizing and quantifying intrafraction motion.
- To provide an overview of MR-guided motion management strategies and current MRgRT system capabilities.
Main Methods:
- Review of intrafraction motion sources in various cancer types.
- Description of MR imaging techniques for motion assessment.
- Analysis of MR-guided motion management strategies and commercial MRgRT system features.
Main Results:
- Identified key sources of intrafraction motion relevant to radiotherapy.
- Detailed MR imaging methods for real-time motion visualization and quantification.
- Outlined current capabilities of MRgRT systems and their application in clinical studies.
Conclusions:
- MRgRT is a powerful tool for intrafraction motion management in radiation therapy.
- Advanced MR imaging techniques enable precise tracking of tumor and patient movement.
- Clinical implementation of MRgRT is advancing, with ongoing studies and future outlooks.
