Angle of knee position [˚] | AM portal relatively standard deviation of radial distortion [%] | AL portal relatively standard deviation of radial distortion [%] | TT portal relatively standard deviation of radial distortion [%] |
30 | no visibility | no visibility | 0.95 |
50 | 0.68 | 1.24 | 0.68 |
70 | 1.46 | 1.20 | 0.54 |
90 | 1.10 | 1.27 | 0.15 |
110 | 0.40 | 1.18 | 0.15 |
130 | 0.10 | 0.70 | 0.08 |