American Shared Hospital Services (ASHS) provides Gamma Knife stereotactic radiosurgery equipment and radiation therapy and related equipment to 19 medical centers in 16 states in the United States and Turkey, as of March 1, 2012. It provides Gamma Knife services through its 81% indirect interest in GK Financing, LLC (GKF). The remaining 19% of GKF is owned by GKV Investments, Inc., which is a wholly owned United States subsidiary of Elekta AG (Elekta). Elekta is the manufacturer of the Leksell Gamma Knifea (the Gamma Knife). GKF is a non-exclusive provider of alternative financing services for Elekta Gamma Knife units. Gamma Knife revenue accounted for 95% of the Company�s revenue, during the year ended December 31, 2011. It also provides Image Guided Radiation Therapy (IGRT) and related equipment to two medical centers located in Massachusetts and Turkey which accounted for 5% of the Company�s revenue, during 2011.