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Professional Technical In the Industry Vocabulary Test

stereotactic radiosurgery

Pronunciation: ster-ee-oh-TAK-tik ray-dee-oh-SUR-jer-ee

Also written as: SRS — stereotactic radiosurgery

A non-invasive radiation therapy technique delivering focused, high-dose radiation to brain tumors with submillimeter precision.

Full Definition

Stereotactic radiosurgery (SRS) is a specialized form of radiation therapy that delivers precisely focused, high-dose radiation beams to small brain tumors or lesions in a single session. Despite its name, it is not surgical but rather a form of radiation treatment that uses multiple converging beams to minimize damage to surrounding healthy tissue. Common systems include Gamma Knife, CyberKnife, and linear accelerator-based systems. In neurosurgical oncology, SRS is often used for brain metastases, small primary tumors, and recurrent lesions.

Usage

Usage note: Distinguish from stereotactic radiation therapy, which may involve fractionation.

In Context

  • "The patient received stereotactic radiosurgery for multiple brain metastases." — Treatment plan
  • "Stereotactic radiosurgery achieved local control in 85% of treated lesions." — Clinical outcomes report

Also known as

SRS radiosurgery stereotactic radiotherapy

Contrasted with

conventional radiation therapy fractionated radiotherapy

Don't confuse with

stereotactic radiation therapy stereotactic biopsy stereotactic surgery
stereotactic biopsy ← Back to glossary Stupp protocol

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