Skip Navigation The Harold Leever Regional Cancer Center


Stereotactic Body Radiation Therapy (SBRT) and Stereotactic Radiosurgery (SRS) are specialized types of external beam radiation therapy that deliver a high dose of radiation to a single, well-defined, preferably very small tumor within the body (SBRT) or within the brain or spine (SRS). The radiation is delivered in either a single treatment session or up to approximately five treatment sessions.


Because SBRT/SRS allows the delivery of high doses of radiation over a shorter period of time compared to traditional radiation therapy, it can show dramatically better outcomes. The success rate for conventional radiation is 30-40%, whereas SBRT/SRS is effective in 80-90% of cases.

Another benefit is that despite the high doses of radiation SBRT/SRS delivers, patients tend to experience fewer side effects such as radiation pneumonia.

How to Prepare

Learn more about how to prepare for radiation therapy treatment.