stereotactic radiosurgery
Pronunciation: ster-ee-oh-tak-tik ray-dee-oh-SUR-jer-ee
Precisely targeted high-dose radiation therapy using stereotactic guidance for brain lesions.
Full Definition
Stereotactic radiosurgery (SRS) delivers highly focused radiation beams to specific brain targets using stereotactic coordinates, typically in a single session. Despite the term 'surgery,' this procedure is non-invasive and uses technologies like Gamma Knife, CyberKnife, or linear accelerator-based systems. SRS treats both benign and malignant brain lesions, arteriovenous malformations, and functional disorders like trigeminal neuralgia. Treatment planning requires precise imaging, dose calculations, and multidisciplinary coordination between neurosurgeons, radiation oncologists, and medical physicists.
Usage
Usage note: Non-invasive despite 'surgery' terminology; distinguish from open surgical procedures.
In Context
- "Gamma Knife stereotactic radiosurgery achieved complete obliteration of the arteriovenous malformation." — Neurosurgical case series
- "The patient underwent stereotactic radiosurgery for recurrent brain metastases." — Radiation oncology treatment plan