Multi-parametric magnetic resonance imaging for radiation treatment planning
Eenas A Omari1, Ying Zhang1, Ergun Ahunbay1
1Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
Medical Physics
|February 16, 2022
Summary
Multi-parametric MRI (MpMRI) is crucial for radiation therapy planning, offering superior soft tissue contrast and functional imaging. This review covers MpMRI techniques, registration, segmentation, and MRI-only planning for advanced radiotherapy.
Area of Science:
- Radiotherapy
- Medical Imaging
- Radiation Oncology
Background:
- Multi-parametric Magnetic Resonance Imaging (MpMRI) has become essential in radiation therapy (RT) treatment planning.
- Its advantages include superior soft tissue contrast, functional imaging capabilities, and adaptable imaging sequences.
- MpMRI is at the forefront of advancements in RT planning.
Purpose of the Study:
- To review the current status of MpMRI in external beam radiation therapy planning.
- To discuss key technical aspects and emerging applications of MpMRI in RT.
Main Methods:
- Review of common MpMRI sequences, preprocessing, and quality assurance.
- Discussion of image registration techniques and strategies.
- Examination of automatic and deep learning-based image segmentation for organs at risk and target delineation.
Main Results:
- MpMRI offers significant benefits for radiation therapy planning due to its advanced imaging properties.
- Various techniques for image registration and segmentation are crucial for accurate treatment planning.
- The integration of MpMRI facilitates MRI-guided online adaptive radiotherapy.
Conclusions:
- MpMRI is a pivotal technology in modern radiation therapy planning.
- Advancements in segmentation and registration are enhancing its utility.
- MRI-only planning is an emerging consideration for adaptive radiotherapy.
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