Table 2.
Standard deviations of random and systematic errors, values of the mean of means, and PTV margin estimates for DIBH and DEBH with pre- and posttreatment images analyzed together
| DIBH |
DEBH |
||||||
|---|---|---|---|---|---|---|---|
| AP | SI | RL | AP | SI | RL | ||
| Random | 2.2 | 3.1 | 1.6 | 1.3 | 1.6 | 1.2 | mm |
| Systematic | 1.7 | 1.8 | 0.8 | 0.9 | 1.0 | 0.8 | mm |
| Mean of means | 0.3 | 0.0 | 0.0 | 0.1 | –0.5 | 0.0 | mm |
| PTV margin | 5.7 | 6.3 | 3.0 | 3.1 | 3.4 | 2.8 | mm |
Abbreviations: AP = anterior–posterior; DEBH = deep expiration breath hold; DIBH = deep inspiration breath hold; PTV = planning target volume; RL = right–left; SI = superior–inferior.