TU‐E‐213A‐02: Implementing New Technologies for Stereotactic Radiosurgery and Stereotactic Body Radiation Therapy

Stereotactic radiosurgery has become the standard of care in the treatment of many cranial neoplasms. This success has stimulated significant interest in the application of such an approach for the treatment of extracranial tumors. The development of image guidance techniques has rapidly facilitated adoption of Stereotactic Body Radiation therapy (SBRT) in a number of anatomical sites. Both SRS and SRT pose a number of practical challenges in acceptance testing, commissioning and clinical implementation. These include: uncertainties in small field measurement and dose calculation, appropriate use of phantoms for verifying image fusion and assuring end‐to‐end localization accuracy, implementing effective immobilization techniques, understanding and adapting for intrafraction motion, planning and delivery for fixed beam and rotational irradiation, and maintaining appropriate QA procedures. In this presentation we will review these challenges with respect to linac‐based SRS and SBRT.