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Table 2 Deviation value, time consumed and statistical values at different registration sites in X, Y, and Z directions (x ± s)

From: Comparison of different registration methods and landmarks for image-guided radiation therapy of pulmonary tumors

Registration sites

Whole registration

Ipsilateral side registration

Tumor registration

Vertebra registration

P

Time consumed (s)

18.9 ± 4.3

4.9 ± 0.9

2.2 ± 0.4

3.1 ± 0.2

< 0.001

Absolute value

 X direction (mm)

0.042 ± 0.056

0.043 ± 0.059

0.098 ± 0.091

0.113 ± 0.096

< 0.001

 Y direction (mm)

0.108 ± .129

0.135 ± 0.138

0.148 ± 0.155

0.233 ± 0.206

< 0.001

 Z direction (mm)

0.077 ± 0.105

0.123 ± 0.128

0.170 ± 0.166

0.118 ± 0.102

< 0.001

Deviation value

 X direction (mm)

0.002 ± 0.070

0.010 ± 0.073

0.018 ± 0.133

0.023 ± 0.148

0.646

 Y direction (mm)

−0.012 ± 0.169

−0.018 ± 0.193

− 0.028 ± 0.213

− 0.047 ± 0.309

0.770

 Z direction (mm)

0.023 ± 0.128

− 0.030 ± 0.175

− 0.010 ± 0.238

− 0.075 ± 0.137

0.011

  1. DICOM standard