June 3, 2013 — Mevion Medical Systems has delivered the superconducting synchrocyclotron accelerator for its Mevion S250 proton therapy system under installation at the Peggy and Charles Stephenson Cancer Center at the University of Oklahoma.
This is the third single-room Mevion S250 proton therapy system delivered — all installed at leading academic institutions.
”We are delighted to receive this revolutionary machine that will allow us to deliver the same proton treatment as other larger conventional systems but at a fraction of the cost and size and with the most advanced clinical targeting technology” said Mike Samis, chairman of the University Hospitals Authority and Trust. “The addition of this advanced treatment option to our flagship cancer center continues to define the OU Cancer Institute as the state’s leading center of excellence.”
Following a five-day journey from Massachusetts to Oklahoma, the proton accelerator was brought into the Stephenson Cancer Center in only a few hours and will be installed on its gantry. The Mevion S250 is enhancing the center’s state-of-the-art radiation therapy department with a fully integrated proton therapy clinical treatment room. A second Mevion S250 treatment space has been reserved to support future clinical demand.
Powered by a TriNiobium Core, the Mevion S250 is a unique proton therapy system that provides the same precise, non-invasive treatment capabilities and advantages of conventional systems but with significantly reduced size, improved reliability, efficient clinical workflow and lower implementation and operational costs. With a footprint similar to an X-ray radiation therapy device, Mevion proton therapy can be easily integrated into any existing radiation therapy department.
For more information: www.mevion.com
November 04, 2025 
