[Adaptative radiotherapy: The case for MRI-guided radiotherapy].

Area of Science:

• Oncology
• Medical Imaging
• Radiation Therapy

Background:

• Image-guided radiotherapy (IGRT) is advancing with integrated imaging techniques.
• Magnetic resonance imaging (MRI) offers superior soft tissue contrast compared to conventional CT scans.
• Advanced MRI techniques like spectroscopy and diffusion analysis provide detailed tissue characterization.

Purpose of the Study:

• To highlight the benefits of integrating MRI into image-guided radiotherapy.
• To discuss the role of MRI in adaptive radiotherapy strategies.
• To review the clinical applications and technological advancements of MRI in IGRT.

Main Methods:

• Review of current literature on MRI in radiotherapy.
• Analysis of technological developments in MRI-guided systems.
• Discussion of clinical evidence supporting MRI's advantages in various cancer types.

Main Results:

• MRI provides enhanced soft tissue visualization, crucial for precise tumor targeting.
• MRI-based patient repositioning improves accuracy without increasing radiation dose.
• Adaptive radiotherapy strategies are significantly optimized by MRI's superior contrast.
• Demonstrated efficacy of MRI-IGRT in treating brain tumors, head and neck cancers, and pelvic malignancies.

Conclusions:

• MRI integration represents a significant advancement in image-guided and adaptive radiotherapy.
• Technological solutions are emerging to facilitate widespread adoption of MRI-guided radiotherapy.
• The enhanced precision and adaptive capabilities offered by MRI promise improved patient outcomes.