IMRT

Frameless: targeting

Cone-­‐beam CT

Orthogonal X-­‐rays

l 3D error < 1mm l Fus i on er ror was not observed

l 3D error < 1mm l Fusion error in 3/102 pa,ents but corrected by manual adjustment

IJROBP 2007;67(4):1220-1228 Radiotherapy and Oncology 2012;95:109–115

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