S. Lee Kling Proton Therapy Center at Siteman Cancer Center

The S. Lee Kling Proton Therapy Center at the Siteman Cancer Center is the only proton therapy center located in Missouri and the surrounding region. The center houses the world's first compact proton beam accelerator, called the Mevion S250™ Proton Beam Therapy System. Radiation oncologists and physicists here helped evaluate the system and developed the patient protocols and quality standards for this advanced technology.