IMRT

Frameless: immobilization setup errors

Mean 3D of 1.91 mm (SD 1.25 mm)

0 1 2 3 4

Vertical Shift [mm]

Longitudinal shift [mm] Lateral shift [mm] Vertical rotation [°] Longitudinal rotation [°] Lateral rotation [°]

-7 -6 -5 -4 -3 -2 -1

Setup error

Int. J. Radiation Oncology Biol. Phys. 2012;83(1):467-474

43