Table 2.
The mean (±1 standard deviation) of interbreath-hold variations averaged over all 20 patients at computed tomography simulation and treatment
| Sim_Varavg (mm) | Tx_Varavg (mm) | P value | |
|---|---|---|---|
| LR | 0.9 ± 0.5 | 1.2 ± 0.4 | .069 |
| AP | 0.9 ± 0.4 | 1.1 ± 0.4 | .057 |
| SI | 1.5 ± 0.9 | 1.9 ± 1.0 | .099 |
| Sim_Varmax (mm) | Tx_Varmax (mm) | P value | |
|---|---|---|---|
| LR | 1.5 ± 0.8 | 2.0 ± 0.7 | .057 |
| AP | 1.4 ± 0.4 | 1.8 ± 0.6 | .028 |
| SI | 2.1 ± 1.0 | 3.1 ± 1.4 | .016 |
Abbreviations: AP = anteroposterior; LR = left-right; SI = superoinferior; Sim_Varavg = average variation in the simulation fiducial position; Tx_Varavg = average variation in the treatment fiducial position.