stereotactic radiosurgery
Also written as: SRS — Stereotactic Radiosurgery
Highly precise radiation delivery technique using multiple convergent beams to treat small targets in single or few fractions.
Full Definition
Stereotactic radiosurgery (SRS) is a specialized form of external beam radiation therapy that delivers a high dose of radiation with sub-millimeter accuracy to small, well-defined targets, typically in a single session. Despite its name, SRS is not surgery but rather an advanced radiation technique that uses multiple precisely aimed radiation beams. It is commonly used for brain metastases, acoustic neuromas, arteriovenous malformations, and trigeminal neuralgia. The technique requires sophisticated imaging, patient immobilization, and treatment planning systems.
Usage
Usage note: Not actual surgery—clarify this distinction when writing for patient education materials.
In Context
- "The patient underwent stereotactic radiosurgery for a 2cm brain metastasis." — Treatment summary
- "SRS protocols require submillimeter accuracy in patient positioning and beam delivery." — Quality assurance document