Investor FAQ

Why develop MRIdian® linac?

  • ViewRay’s Cobalt-based radiation technology is a breakthrough that integrates high quality intensity modulated radiation therapy (IMRT) with simultaneous magnetic resonance imaging (MRI) of soft tissues to provide optimal alignment, adaptation, and tracking.  However, Linear Accelerator (linac) systems are perceived to have several advantages.
  • Linear Accelerator technology obviates the need for the inspection, replacement, and disposal of Cobalt-60, and oversight from the Nuclear Regulatory Commission (or national agency in foreign countries).  Additionally, Linear Accelerators are [more] familiar to the market.
  • Linac-based radiation therapy delivery systems allow for higher dose, faster electronic variation of dose and electronic beam activation and deactivation.

How did ViewRay overcome the challenges of incorporating a linac in a compact MRI-guided system like the MRIdian?

  • ViewRay solved two major long-standing problems to compactly integrate a linac beam with an MRI system: 1) linac radiofrequency interference with the operation of the MRI and 2) MRI magnetic interference with the operation of the linac.
  • Linacs utilize high-powered microwave generators similar to equipment used in radar at airports.  These “radar stations” inside the linac create noise that can corrupt the delicate signals measured from the patient’s body to generate MR images.  ViewRay solved this problem by introducing technology similar to that used in stealth aircraft.  Stealth aircraft can hide from radar by using a coating that reflects and absorbs microwaves, thus preventing radar beams that strike the aircraft from bouncing back to the radar station.  In a similar manner, we reflect and absorb the output of the linac “radar station” to hide it from the MRI, producing images as noise-free as MRI images with no integrated linac.
  • MRIs utilize high-powered superconducting magnets that are required to image the patient’s tissues.  Many linac components will not operate properly when placed close to or inside these strong magnetic fields, and such placement is necessary to produce a compact system like the MRIdian linac.  ViewRay overcame this challenge by creating magnetic shielding shells that create voids in the magnetic field without significantly disturbing the magnetic field used for imaging.  This allows the linac to operate on the MRIdian gantry as if there were no magnetic field present.

Does the MRIdian linac technology limit or change any of the MRIdian features?

No, the MRIdian linac technology only improves our solution and is being developed to be an upgrade to existing MRIdian systems. ViewRay has applied the same double-focused multi-leaf collimator technology, originally designed to improve Cobalt-60 systems, to ViewRay’s MRIdian linac technology. We believe incorporating this beam shaping technology with the already sharp linac radiation source results in the sharpest linac beam to be developed in the industry.

What is the regulatory status of MRIdian® globally?

MRIdian with linac radiation is available for sale and delivery in the USA and EU. It is also approved in Canada, Japan, Korea, Taiwan, United Arab Emirates, and Turkey.

MRIdian with cobalt radiation is available for sale and delivery in: USA, EU, Japan, China, Taiwan, United Arab Emirates, and Korea.

How long has ViewRay been in business?

ViewRay started operations as a Florida corporation in 2004 and subsequently reincorporated in Delaware in 2007. With this merger the company will continue to be incorporated in Delaware.

Where is ViewRay traded?

ViewRay is traded on the Nasdaq under the symbol "VRAY”.

Who is the transfer agent and what is their contact information?

American Stock Transfer is ViewRay’s transfer agent. Investors interested in purchasing shares directly or registered shareholders wanting to make changes to their account should contact American Stock Transfer. If you own shares through a brokerage firm, you need to contact the brokerage firm directly to make any account changes.

American Stock Transfer & Trust Company, LLC
6201 15th Avenue
Brooklyn, NY 11219
(800) 937-5449

What is ViewRay’s fiscal year?

ViewRay’s fiscal year runs from January 1 through December 31.

What are ViewRay’s corporate governance guidelines?

To review our corporate governance guidelines and related information, please go to the Corporate Governance section of our IR website.

How can I contact ViewRay Investor Relations?

You can reach ViewRay’s Investor Relations team via e-mail at or 1.844.MRIDIAN (674-3426).

Where is ViewRay located?

The company’s principal executive offices are at 2 Thermo Fisher Way, Oakwood Village, Ohio 44146. We also have offices in Silicon Valley, California at 815 E. Middlefield, Rd., Mountain View, CA 94043.

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Transfer Agent
American Stock Transfer & Trust Company, LLC
6201 15th Avenue
Brooklyn, NY 11219
(800) 937-5449

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