Brain Stereotactic Radiosurgery (SRS)Brain Stereotactic Radiosurgery (SRS) is the most accurate way to precisely deliver high dose radiation therapy to malignant and benign brain tumors. This very high dose of radiation, substantially higher than conventional fractionated radiation therapy, is designed to remove or destroy the brain tumor, as surgery would, but without the risks of open surgery.
Brain SRS is an excellent option for treating brain metastases. Brain metastases are secondary tumor in the brain that have spread from cancer in a different part of the body. Brain metastases are the most common intra-axial brain tumor, and there are an estimated 170,000 cases diagnosed annually in the United States. Brain SRS can be used either in place, of or in conjunction with, fractionated external beam radiation therapy.
When compared with conventional treatments, brain SRS not only offers superior tumor control, but also is associated with fewer side effects (i.e., potentially no hair loss and less fatigue) and requires fewer patient visits to our department. Studies have shown that brain SRS boosts survival in patients with single brain metastases by 33 percent when added to whole brain radiation. Other groups have demonstrated that brain SRS can be used in place of whole brain radiation, and that whole brain radiation can be avoided in up to 70% of cases.
Other uses for brain SRS are malignant brain tumors, for instance, gliomas or recurrences; benign brain tumors, such as pituitary adenomas, craniopharyngiomas, or acoustic neuromas; and even functional conditions such as trigeminal neuralgia.