July 30, 2014 — ViewRay featured its MRIdian system at the 2014 annual meeting of the American Association of Physicists in Medicine (AAPM), held in Austin, Texas.
The MRIdian system — the first and only MRI-guided radiation therapy system — is designed to improve the accuracy of cancer treatments through a patented combination of simultaneous magnetic resonance imaging (MRI) and radiation therapy delivery. With continuous soft-tissue imaging, clinicians can clearly see the cancer target, monitor where the actual radiation dose is being delivered, and adapt to changes in the patient’s anatomy, all in real time, providing a more precise and personalized cancer treatment option. MRI-guided radiation therapy was one of the six “hot topics” for AAPM 2014, and was highlighted in several tracks during the conference.
First patient treatments on the MRIdian system began January 2014 at the Siteman Cancer Center in St. Louis. Since the launch of its MRI-guided RT program, the center has treated a wide array of disease sites including breast, bladder, lung, pancreas and stomach.
For more information: www.viewray.com
March 13, 2026 
