Mevion Announces First Clinical Treatment on the MEVION S250-FIT™ Proton Therapy System
Stanford Medicine Cancer Center delivers the world’s first patient treatment using an ultra-compact proton therapy system installed in an existing conventional radiation therapy vault
Mevion Medical Systems, a global leader in compact proton therapy, today announced that the world’s first clinical proton therapy treatment delivered inside an existing conventional radiation therapy vault has been completed at Stanford Medicine Cancer Center. The treatment was delivered on the MEVION S250-FIT Proton Therapy System™.
The milestone establishes a new category of proton therapy delivery: a compact single-room system that fits within existing radiation oncology infrastructure, eliminating the need for dedicated proton therapy bunker construction while enabling high-quality CT image guidance directly at the treatment position. For Stanford Medicine, the approach resolved long-standing space constraints in Palo Alto and accelerated the integration of advanced particle therapy into its existing oncology program.
A New Architecture for Proton Therapy
