SBRT2015

Results: Intrafraction shifts

" Lateral # Mean: -0.11 mm, SD: 0.65 mm # -3.52mm – 2.87mm " Longitudinal # Mean: 0.13 mm, SD: 0.78 mm # -4.01mm – 2.99mm " Vertical # Mean: -0.11 mm, SD: 0.48 mm # -3.08mm – 1.51mm

Van Herk formula (2.5∑+0.7σ) !

Lateral 1.37mm ; longitudinal 1.85mm ; vertical 1.00mm

Linthout et al. Radiother Oncol 2012

34

SBRT 2015 - D. Verellen