Department of Radiation Oncology

SRS / SRBT

Stereotactic radio surgery (SRS) is a non-surgical radiation therapy used to treat functional abnormalities and small tumors of the brain. It can deliver precisely-targeted radiation in fewer high-dose treatments than traditional therapy, which can help preserve healthy tissue. When SRS is used to treat body tumors, it's called stereotactic body radiotherapy (SBRT).

How are these treatments alike?

  • Use multiple narrow radiation beams
  • Target small, well-defined areas with precision.
  • Use immobilization devices or techniques that limit or monitor and adjust for any movement during treatment.
  • Give high doses of radiation safely and accurately over just a few treatments (usually one to five sessions overall.
  • Stereotactic treatments direct multiple narrow beams of radiation toward a tumor.
  • Conditions Treated With Stereotactic Radiation Stereotactic body radiation therapy (SBRT) is used to treat small tumors in the chest, abdomen or pelvis that cannot be removed surgically or treated with conventional radiation therapy, including:
  • Cancers that started elsewhere and spread to the lung (lung metastases).
  • Cancers that started elsewhere and spread to the liver (liver metastases).


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