SBRT
Also written as: SBRT — Stereotactic Body Radiation Therapy
Stereotactic body radiation therapy delivering high-dose radiation to extracranial targets in few fractions.
Full Definition
Stereotactic body radiation therapy (SBRT) is a specialized radiation technique that delivers precisely targeted, high-dose radiation to extracranial tumors in one to five treatment fractions. This approach requires sophisticated imaging guidance and motion management to achieve submillimeter accuracy. SBRT is particularly effective for small, well-defined tumors in organs such as the lung, liver, spine, and prostate. The high biological dose delivered in few fractions makes SBRT an attractive option for oligometastatic disease and medically inoperable patients. Imaging plays a crucial role in treatment planning, delivery verification, and post-treatment monitoring.
Usage
Usage note: Often used interchangeably with SABR in clinical practice.
In Context
- "The patient is scheduled for SBRT to the right upper lobe pulmonary nodule in three fractions." — Treatment planning note
- "Post-SBRT imaging showed expected inflammatory changes without evidence of residual tumor." — Follow-up report