Exploring Magnetic Resonance Imaging Guidance in Radiation Oncology.

This article focuses on the implementation and impact of magnetic resonance imaging–guided radiation therapy (MRIgRT) in radiation oncology. MRIgRT integrates onboard magnetic resonance (MR) imaging with linear accelerators to provide superior soft-tissue visualization, real-time intratreatment imaging, and online adaptive treatment planning, which allows radiation oncologists to adjust therapy based on daily anatomical changes. Compared to conventional imaging methods like cone-beam computed tomography (CBCT), MRIgRT reduces radiation exposure and improves tumor targeting while sparing surrounding healthy tissues, as demonstrated in studies involving prostate cancer treatment. Challenges to widespread adoption include higher costs, safety considerations related to strong magnetic fields, longer imaging times, and the need for specialized training and facility modifications. Despite these hurdles, MRIgRT shows promise for enhancing personalized radiation therapy and improving clinical outcomes.