Hospital Corporation of America (HCA) of Nashville, Tenn., has purchased its seventh CyberKnife robotic radiosurgery system from Accuray.

The purchase is the first non-U.S. purchase for HCA, and will be used at The Harley Street Clinic in London, England, said the Sunnyvale, Calif-based Accuray.

HCA includes 170 hospitals and 113 outpatient centers in 20 states and England, and employs approximately 180,000 people.