gamma knife radiosurgery
A precise form of stereotactic radiosurgery using focused gamma rays to treat brain tumors and vascular malformations.
Full Definition
Gamma Knife radiosurgery is a specialized form of stereotactic radiosurgery that delivers highly focused gamma radiation to intracranial targets using a dedicated device containing multiple cobalt-60 sources. The technique allows for precise targeting of brain tumors, arteriovenous malformations, and functional disorders while minimizing radiation exposure to surrounding healthy brain tissue. Treatment is typically delivered in a single session, though hypofractionated approaches are increasingly used for larger targets. The procedure requires rigid head frame fixation or frameless immobilization systems for accurate targeting. Gamma Knife is particularly effective for small to medium-sized brain metastases, acoustic neuromas, meningiomas, and trigeminal neuralgia.
Usage
Usage note: Gamma Knife is a proper noun and should be capitalized.
In Context
- "The patient underwent Gamma Knife radiosurgery for multiple brain metastases." — Treatment summary
- "Gamma Knife treatment planning requires high-resolution MRI for target delineation." — Protocol document