American Shared Hospital Services is a provider of turnkey technology solutions for stereotactic radiosurgery and advanced radiation therapy equipment and services. The Company is a provider of Gamma Knife radiosurgery equipment, a non-invasive treatment for malignant and benign brain tumors, vascular malformations, and trigeminal neuralgia (facial pain). It can be an adjunct to conventional brain surgery, radiation therapy or chemotherapy. Typically, Gamma Knife patients resume their pre-surgical activities one or two days after treatment. The Company also offers proton therapy, and the IGRT, IMRT and MR/LINAC systems. The Company provides Gamma Knife units to approximately 12 medical centers in 11 states in the United States and two Gamma Knife units at stand-alone facilities in Lima, Peru and Guayaquil, Ecuador. The Company’s subsidiaries include American Shared Radiosurgery Services (ASRS), OR21, Inc. and MedLeader.com, Inc. (MedLeader).