News-Medical -- IsoRay, Inc. (Amex: ISR) announced today that on August 5, 2009, Dr. Bhupesh Parashar from the Department of Radiation Oncology, Dr. David Kutler of the Department of Otorhinolaryngology, and Dr. Jason Spector of the Department of Plastic Surgery at Weill Cornell Medical Center performed the world’s first Cesium-131 implant for a recurrent head and neck cancer (buccal mucosa).