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MRI-Guided ROAR™

Real-Time On-Table Adaptive Radiotherapy

Advanced Oncotherapy

MRI-Guided Radiation Therapy

After six years of clinical use, MRIdian has treated more than 11,000 patients.

By delivering accurate, precise and personalized cancer treatment, MRIdian is changing the radiotherapy paradigm through clinical, strategic, and economic value – one ablative dose at a time.


Discover MRIdian®

MRIdian gives clinicians the confidence to shrink margins while escalating dose and reducing fractions. Patients have more treatment options, better treatment outcomes, reduced toxicity and improved quality of life.

Combining the latest innovations in precision radiation delivery, groundbreaking MR image guidance, and on-table adaptive therapy, MRIdian represents a new paradigm in radiation oncology.

MRIdian - MRI-Guided Radiation Therapy

Our Mission : To Treat and Prove What Others Can't

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A New Paradigm in Radiation Oncology

Over the past 30 years, conventional IGRT has introduced many life saving developments, yet poor soft tissue contrast, the use of surrogates to identify anatomy, and having no real-time imaging during beam-on have often constrained clinical potential.

Combining the latest innovations in precision radiation delivery with groundbreaking MR image guidance and on-table adaptive therapy, it’s time for the next big advance in radiation oncology.

The future of radiation therapy is here.

First pioneered by ViewRay in 2012, MRI-Guided ROAR™ represents a new paradigm in the treatment of cancer, providing clinicians with the ability to improve targeting precision and thus deliver higher, and potentially more effective, radiation doses.


Able to fit within almost any existing standard linear accelerator vault, MRIdian’s compact SmartSITE footprint addresses common physical space limitations and avoids the excessive delays, interruptions, and costs necessary to remove walls or build custom, large-scale vaults.


MRIdian is the only radiotherapy solution that can see and track soft tissue and tumors in real time.

MRIdian’s SmartVISION delivers high-definition, diagnostic-quality imaging designed specifically to maintain high-fidelity beam delivery while virtually eliminating the risks of skin toxicities, trapped or distorted dose and other concerns that may occur when high magnetic fields interact with radiation beams.


MRIdian shapes the dose to fit the day. It’s the only MR solution that enables integrated adaptive treatment for on-table reoptimization of the daily treatment plan.

MRIdian captures 8 frames per second, leveraging high-contrast anatomical detail to rapidly reshape dose delivery based on the current position of both the tumor and adjacent critical structures – all while the patient is in the treatment position.


MRIdian knows when to strike, visualizing the tumor’s edges and surrounding organ position in real time.

It’s the only RT solution with automated beam gating for precise and accurate dosing. When the tumor moves, the beam stops. Clinicians can shrink margins with confidence while escalating dose and reducing fractions.

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More Patients. More Proof. More Promise.

At ViewRay, we are re-envisioning radiation therapy to conquer cancer with MRIdian®. In routine clinical use throughout the world, the MRIdian system is revolutionizing radiation oncology and emerging as a new paradigm in patient care.

Would you like to know more?
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Our clinical and application specialists would be delighted to assist you in exploring how these products & solutions can help your establishment and patients.

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