Gamma Knife Radiosurgery is a non-invasive form of stereotactic radiosurgery (SRS) used to treat selected brain tumors, vascular abnormalities, and other neurological conditions. Despite its name, it does not involve a surgical incision or conventional cutting. It uses multiple highly focused beams of gamma radiation that converge precisely on the targeted area, delivering a therapeutic dose while limiting exposure to surrounding healthy brain tissue.
Patients with Suitable Brain Tumors
Individuals with certain small or well-defined brain tumors, including selected benign and malignant tumors, that can be precisely targeted with radiosurgery.
Patients with Vascular Brain Conditions
People with conditions such as selected arteriovenous malformations (AVMs) that may be suitable for focused radiation treatment.
Patients with Recurrent or Difficult-to-Reach Lesions
Individuals with tumors or lesions that have returned after treatment or are located in areas where conventional surgery may carry significant risks.
Detailed Imaging & Treatment Planning
Your neurosurgical and radiation oncology team uses MRI, CT, and other imaging techniques to precisely locate and map the target while identifying nearby critical brain structures.
Focused Gamma Radiation
The Gamma Knife system directs multiple narrow beams of gamma radiation from different angles so that they converge on the targeted tissue while minimizing radiation exposure to surrounding healthy brain tissue.
Treatment Monitoring & Follow-Up
The treatment team monitors you throughout the procedure and schedules follow-up imaging and neurological assessments to evaluate the response over time.
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Your Treatment Journey
Before Procedure
- You will undergo detailed MRI or other brain imaging to identify the exact size and location of the target.
- Your specialist will explain the treatment plan, expected benefits, potential side effects, and number of sessions required.
- Depending on the Gamma Knife system and treatment plan, a head frame or customized mask may be used to keep your head accurately positioned.
During Procedure
- Gamma Knife radiosurgery is non-invasive, so there is no conventional surgical incision.
- Treatment may be completed in a single session or multiple sessions, depending on the size, location, and type of lesion.
- You generally remain awake during treatment, although medication may be provided to help you remain comfortable.
After Procedure
- Most patients can return home the same day or after a short period of observation.
- Mild headache, fatigue, or temporary discomfort may occur, depending on the treatment.
- Follow-up MRI scans and neurological evaluations are important to monitor treatment response, as the effects of radiosurgery may develop gradually over time.
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