American Shared Hospital Services leases radiosurgery and radiation therapy equipment to health care providers. The company offers radiosurgery equipment for the Gamma Knife stereotactic radiosurgery, a non-invasive procedure to treat malignant and benign brain tumors, and arteriovenous malformations, as well as for trigeminal neuralgia. It also provides image guided radiation therapy (IGRT) systems that integrate imaging and detection components into an accelerator, which allows clinicians to plan treatment, verify positioning, and deliver treatment. In addition, the company offers financing services for Leksell Gamma Knife units. Further, it provides proton beam therapy equipment (PBRT) and services in Orlando, Florida and Long Beach, California, as well as offers planning, installation, reimbursement, and marketing support services to its customers. As of March 1, 2020, it operated 15 Gamma Knife units in 14 states of the United States and one in Lima, Peru. It also operates one PBR