IsoRay Medical develops a range of isotope medical devices for the treatment of cancer. It specializes in the production of Cesium-131 brachytherapy seeds. The company also designs and manufactures a variety of devices to treat prostate cancer and other cancerous tumors. It has been in operation since 1998. The company serves medical centers, hospitals and clinics throughout the United States. In addition, it provides online information on the advantages of several isotopes. The company designs products for the treatment of breast, liver, brain, head and neck cancers and other malignant disease. IsoRay Medical is a wholly owned and operated subsidiary of IsoRay.