2017_SBRT_Course Book

Towards extracranial SRS: body frames

… still requires IGRT

• Deviations of 12 mm have been observed •

Applying a safety margin of 5 mm, 12-16% of the target might be partially missed

• (Wulf et al. ) • CT prior to treatment is a pre- requisite • Lax et al.

Stereotactic Body Frame, Lax et al.

• AAPM TG 101 recommendation: Ø “Body frames and fiducial systems are OK for immobilization and coarse localization” Ø “They shall NOT be used as sole localization technique”

Lax et al. Acta Oncol 1994 Benedict et al. Med Phys 2010

15

SBRT 2017 - D. Verellen