21st Century Oncology offers a choice of all the latest External Beam Radiation Therapy (EBRT) technologies, including Stereotactic Radiosurgery (SRS). Because of the pinpoint accuracy of this technology, SRS can deliver higher doses of radiation in fewer treatment sessions, with less risk to surrounding healthy tissue. Treatment is delivered in one to five sessions compared to five to eight weeks with standard EBRT treatment. SRS is effective against small, well-defined tumors in inoperable or surgically risky locations such as the brain and spine.