Table 4 Residual errors (mm) of the upper vertebrae and clavicula (in parenthesis) when the orthogonal setup images are matched to different positions
Systematic error Σ | Random error σ | Margins in mm | ||||
|---|---|---|---|---|---|---|
Matching position | LAT direction | SI direction | LAT direction | SI direction | LAT direction | SI direction |
MID_V | 1.3 (2.5) | 1.1 (2.3) | 1.3 (2.2) | 1.8 (3.1) | 4.2 (7.8) | 4.0 (7.9) |
MID_R+UPPER _ST | 1.9 (2.3) | 3.0 (2.3) | 1.3 (2.1) | 2.3 (2.2) | 5.7 (7.2) | 9.1 (7.3) |
MID_V+UPPER_ST | 1.3 (2.5) | 2.5 (2.4) | 1.3 (2.2) | 1.8 (2.4) | 4.2 (7.8) | 7.5 (7.7) |
MID_V+MID_R | 1.5 (2.3) | 1.4 (2.0) | 1.2 (2.0) | 1.5 (2.3) | 4.6 (7.2) | 4.6 (6.6) |
MID_V+UPPER_ST+MID_R | 1.5 (2.3) | 2.2 (2.0) | 1.2 (2.0) | 1.9 (2.2) | 4.6 (7.2) | 6.8 (6.5) |
UPPER_ST | - | 4.5 (3.4) | - | 3.0 (3.0) | - | 13.4 (10.6) |
MID_R | - | 2.4 (2.3) | - | 2.4 (2.3) | - | 7.7 (7.4) |
Online match to optimal position1 | 1.7 (2.4) | 3.5 (2.9) | 1.4 (2.2) | 2.9 (2.9) | 5.3 (7.5) | 10.8 (9.2) |