Table 3.
The measured random error for each of 30 patients treated and imaged for 38 – 39 fractions; also listed is the percentage of treatment fractions for which the random error would have exceeded the treatment margins without the use of image‐guided radiation therapy a
| 1 SD Setup error (mm) | Percentage exceeding margin | |||||
|---|---|---|---|---|---|---|
| Patient | Rt–lt | Sup–inf | Ant–post | Rt–lt | Sup–inf | Ant–post |
| 1 | 3.8 | 1.3 | 2.6 | 0 | 0 | 3 |
| 2 | 3.2 | 1.8 | 1.7 | 0 | 0 | 0 |
| 3 | 3.7 | 1.4 | 2.1 | 0 | 0 | 0 |
| 4 | 2.7 | 1.8 | 3.5 | 0 | 0 | 3 |
| 5 | 2.6 | 1.6 | 2.7 | 0 | 0 | 3 |
| 6 | 3.7 | 4.5 | 9.4 | 0 | 5 | 41 |
| 7 | 5.2 | 3.8 | 2.3 | 5 | 0 | 0 |
| 8 | 3.8 | 2.7 | 2.2 | 0 | 0 | 0 |
| 9 | 4.8 | 1.6 | 3.8 | 5 | 0 | 8 |
| 10 | 2.7 | 1.7 | 1.8 | 0 | 0 | 0 |
| 11 | 3.7 | 2.0 | 2.5 | 0 | 0 | 3 |
| 12 | 2.1 | 1.7 | 2.1 | 0 | 0 | 5 |
| 13 | 8.4 | 3.6 | 5.0 | 21 | 0 | 18 |
| 14 | 3.2 | 1.3 | 3.1 | 0 | 0 | 8 |
| 15 | 4.5 | 1.6 | 3.1 | 3 | 0 | 3 |
| 16 | 2.6 | 1.5 | 2.4 | 0 | 0 | 3 |
| 17 | 1.9 | 3.0 | 3.0 | 0 | 0 | 5 |
| 18 | 2.8 | 2.4 | 1.8 | 0 | 0 | 0 |
| 19 | 4.1 | 2.2 | 2.3 | 3 | 0 | 3 |
| 20 | 3.6 | 2.7 | 3.4 | 3 | 0 | 8 |
| 21 | 8.1 | 5.3 | 6.7 | 21 | 3 | 13 |
| 22 | 3.9 | 4.9 | 2.7 | 0 | 5 | 5 |
| 23 | 3.2 | 2.0 | 5.5 | 0 | 0 | 13 |
| 24 | 2.9 | 3.2 | 4.2 | 0 | 3 | 8 |
| 25 | 2.3 | 1.8 | 4.0 | 0 | 0 | 10 |
| 26 | 3.7 | 3.2 | 2.6 | 0 | 0 | 0 |
| 27 | 3.1 | 2.4 | 3.4 | 3 | 0 | 11 |
| 28 | 5.0 | 2.2 | 5.7 | 0 | 0 | 18 |
| 29 | 3.4 | 2.7 | 4.0 | 0 | 0 | 10 |
| 30 | 2.2 | 1.5 | 2.0 | 0 | 0 | 0 |
a
The planning treatment volume (PTV) for all patients was defined by adding a 5‐mm margin around the clinical treatment volume (CTV) posteriorly and a 10‐mm margin in all other directions.
; ; ; .