Stereotactic Radiosurgery

Stereotactic Radiosurgery graphic

There is growing evidence worldwide that stereotactic radiosurgery is a safe and effective treatment choice for a number of conditions, including certain primary and metastatic brain tumors, acoustic neuromas, meningiomas, and arteriovenous malformations in deep, inaccessible areas of the brain.

Combining radiation oncology and stereotactic expertise, stereotactic radiosurgery is a precise, technologically sophisticated procedure which can be performed on an outpatient basis, a significantly less taxing and better-tolerated form of therapy than repeated visits to the medical center for conventional radiation therapy. Because stereotactic radiosurgery requires no anesthesia and no incision, the procedure is also less stressful than surgical approaches.

Stereotactic Radiosurgery skull graphic

Stereotactic radiosurgery can be performed on an outpatient basis. In some cases, the patient may be hospitalized after the procedure for observation.

A typical schedule for the day

  • 6:00-8:00 am: The patient arrives at Dartmouth Hitchcock Medical Center's Lebanon campus. Using a local anesthetic, the neurosurgeon applies a stereotactic frame to guide the subsequent treatment.
  • 8:00-9:00 am: The patient undergoes computed tomography (CT) or angiography.
  • 9:00-11:00 am: The radiation oncologist, the neurosurgeon, and the physics section utilize a treatment planning computer to simulate different treatment approaches involving a variety of radiation dose distributions and delivery angles to determine optimal treatment.
  • 11:00 am-Noon: The physics section verifies the treatment plan and checks the accuracy of the equipment set-up.
  • Noon-2:00 pm: The patient undergoes treatment. Using multiple arcing X-ray beams, the radiation from the linear accelerator is concentrated on the lesion. Adjacent tissue is spared.
  • 2:00 pm: The frame is removed and the patient leaves after receiving post-treatment instructions.