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Table 2 Final deviations of phantom position compared to planning CT after 6DoF correction with HexaPOD.

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

 

X(mm)

Y(mm)

Z(mm)

3D-vector (mm)

rot x (°)

rot y(°)

rot z(°)

M

0.0 ± 0.1

0.1 ± 0.3

0.1 ± 0.2

 

0.01 ± 0.1

0.06 ± 0.1

0.06 ± 0.1

σ(Mean ± SD)

0.1 ± 0.1

0.3 ± 0.2

0.2 ± 0.1

0.4 ± 0.2

0.08 ± 0.1

0.08 ± 0.1

0.06 ± 0.1

  1. grey value match of CBCT2 with planning CT
  2. group mean error (M)
  3. root mean square of random errors (σ)
  4. Degree of freedom (DoF)