STOCKHOLM, Sweden--(BUSINESS WIRE)--Regulatory News: Elekta (STO:EKTA): UPMC Presbyterian’s Center for Image-Guided Neurosurgery, a leading radiosurgery center in the U.S., successfully has commenced patient treatments with Leksell Gamma Knife® Perfexion™ from Elekta. Leksell Gamma Knife Perfexion is the latest and most advanced solution on the market for non-invasive treatment of brain disorders and this highly innovative system was first used at UPMC on September 28. Immediately, UPMC was able to make full use of the new system and the center now is treating on average three patients, with full course treatments, per day.