American Shared Hospital Services provides Gamma Knife stereotactic radiosurgery equipment and radiation therapy and related equipment to over 18 medical centers in approximately 17 states in the United States. The Company provides Gamma Knife services through its 81% indirect interest in GK Financing, LLC. The Company provides the equipment, as well as planning, installation, reimbursement and marketing support services. Gamma Knife stereotactic radiosurgery is a non-invasive procedure, which is an alternative to conventional brain surgery or can be an adjunct to conventional brain surgery, radiation therapy, or chemotherapy. Its radiation therapy business consists of one Image Guided Radiation Therapy Operations (IGRT) system. IGRT technology integrates imaging and detection components into a linear accelerator, allowing clinicians to plan treatment, verify positioning and deliver treatment with a single device, providing radiation therapy with less damage to healthy tissue.