Gamma Knife (Stereotactic Radiosurgery)
Gamma Knife (stereotactic radiosurgery) is a single high dose of radiation that is focused on the tumor itself. The normal tissue around the tumor receives little or no radiation. It is most effective for small tumors with very sharp margins. A head frame is used to keep the head in the correct position, and CAT or MRI scans are used to locate the tumor. That radiation is directed to the tumor by a machine (the Gamma Knife or the linear accelerator). The patient must lie still during the treatment; medications may be given to aid in relaxation.
The University of Virginia has been a pioneer in Gamma Knife surgery, and has one of only two Gamma Knives in Virginia. Physicians conduct ongoing research to continue to improve the uses of this precise, noninvasive surgical technique.
Visit the UVA Gamma Knife site to learn more.