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Interfraction variation in gross tumor volume border position relative to the first ABC helical CT scan (n = 9), for the study population, as determined by bounding-box analysis . All data reported in mm.
| Left | Right | Ant | Post | Sup | Inf | |
|---|---|---|---|---|---|---|
| Group Mean (M) | 2.8 | −0.7 | 0.8 | 4.5 | 0.7 | −0.1 |
| Systematic Error (Σ) | 3.7 | 3.5 | 2.2 | 6.6 | 6.3 | 6.1 |
| Random Error (σ) | 3.3 | 2.5 | 2.8 | 3.8 | 4.6 | 6.9 |
Abbreviations: Ant, Post, Sup, and Inf represent anterior, posterior, superior, and inferior tumor borders, respectively.
