
The ViewRay MRIdian Linac is the world’s first and only FDA-cleared MR image-guided radiation therapy system. It provides a unique combination of continuous magnetic resonance imaging (MRI) and simultaneous radiation therapy delivery for the treatment of cancer. MRI improves tumor visibility by clearly defining the targeted tumor from the surrounding soft tissue and other critical organs. The ability to see both the tumor and surrounding organs constantly throughout radiation delivery allows physicians to personalize treatment based on changes in the shape or location of the tumor and surrounding tissues using on-table adaptive therapy. As a result, physicians can quickly respond to subtle anatomical changes observed on a daily basis and reshape the dose to better match the current contours of the tumor.













