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Table 5 Intra- fraction movement.

From: Semi-robotic 6 degree of freedom positioning for intracranial high precision radiotherapy; first phantom and clinical results

  Translations (mm) Rotations (°)
  X Y Z x y z
M -0.1 0 0 0 -0.06 -0.15
Σ 0.2 0.2 0.1 0.09 0.15 0.24
σ 0.4 0.4 0.2 0.15 0.23 0.31
max 1.8 1.1 1.4 0.8 1.1 2
  1. Results were obtained from registration of planning CT-with cone-beam CT (CBCT2), based on the cranium as region of interest, using grey value matching.