Table 2 The mean and standard deviation (SD) of translational and rotational motion ranges of liver tumors in each direction
|  | ∆x (mm) | ∆y (mm) | ∆z (mm) | ∆d (mm) | ∆θx(°) | ∆θy(°) | ∆θz(°) |
|---|---|---|---|---|---|---|---|
Mean | 2.92 | 5.54 | 16.22 | 11.89 | 3.95 | 4.93 | 4.09 |
SD | 1.98 | 3.12 | 5.86 | 5.11 | 3.08 | 2.90 | 1.99 |