SABR
Pronunciation: SAY-ber
Also written as: SABR — Stereotactic Ablative Body Radiotherapy
High-precision radiation therapy delivering ablative doses to extracranial tumors in few fractions.
Full Definition
Stereotactic Ablative Body Radiotherapy (SABR) is an advanced external beam radiation technique that delivers very high doses of radiation with extreme precision to small, well-defined tumors outside the brain and spine. The technique uses sophisticated imaging guidance and beam shaping to ablate tumors while minimizing dose to surrounding healthy tissues. SABR typically involves 1-5 treatment fractions and is particularly effective for early-stage lung cancers and oligometastatic disease. The high biological effective dose achieved can result in local control rates exceeding 90% for appropriately selected lesions.
Usage
Usage note: Distinguish from SBRT (stereotactic body radiation therapy) - terms are often used interchangeably but SABR emphasizes the ablative nature.
In Context
- "The patient received SABR to a solitary lung metastasis with a prescription dose of 54 Gy in 3 fractions." — treatment planning report
- "SABR protocols require stringent motion management and daily image guidance." — clinical protocol