stereotactic radiosurgery
Precise, high-dose radiation therapy delivered to small brain targets using stereotactic guidance systems.
Full Definition
Stereotactic radiosurgery (SRS) is a non-invasive neurosurgical procedure that delivers highly focused, high-dose radiation to precisely defined intracranial targets while minimizing exposure to surrounding healthy tissue. Despite the name 'surgery,' no incision is made. The technique uses multiple radiation beams converging on the target lesion, guided by stereotactic coordinate systems and advanced imaging. SRS is used to treat brain tumors, arteriovenous malformations, trigeminal neuralgia, and functional disorders. Common platforms include Gamma Knife, CyberKnife, and linear accelerator-based systems.
Usage
Usage note: Specify platform used (Gamma Knife, CyberKnife, LINAC); distinguish from fractionated stereotactic radiotherapy.
In Context
- "The patient underwent Gamma Knife stereotactic radiosurgery for a small meningioma." — Radiation oncology treatment plan
- "Stereotactic radiosurgery achieved complete obliteration of the arteriovenous malformation." — Follow-up imaging report