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Table 1 Patient positioning errors prior to cone-beam CT based image-guidance (IG) and immediately following image-guided radiosurgery (IG-RS)

From: Dosimetric consequences of translational and rotational errors in frame-less image-guided radiosurgery

  Prior IG (n = 98) Post IG-RS (n = 64)
  Average StDev Max Average StDev Max
LR [mm] 0.1 2.1 10.3 0.1 0.6 1.8
SI [mm] −0.8 1.7 5.4 −0.3 0.8 3.0
AP [mm] −2.7 2.0 9.9 −0.2 0.4 1.4
3D vector [mm] 3.9 1.9 11.9 0.9 0.6 3.0
Max Rotation [°] 1.7 0.8 4.0 0.6 0.5 3.0