Table 2.
The mean (range) difference between planned and delivered dose to GTV and gastrointestinal OARs with and without position corrections.
| Structure | Difference between total plan and delivered DVH metric(Gy/cc)Mean (min-max) | Statistical difference between delivery with and without corrections where position deviations were detected | ||
|---|---|---|---|---|
| Metric | With position correction | Without position correction | p value | |
| GTV | Mean dose Min dose |
-0.4 (-1.1 - 0.9) 0.1 (-1.0 – 1.1) |
-0.4 (-0.8 - -0.1) -0.1 (-1.4 – 0.5) |
0.66 0.33 |
| D98 | 0.2 (-0.6 - 1.8) | 0.2 (-0.8 - 1.2) | 0.10 | |
| Duodenum | Dmax | 1.1 (-0.7 - 3.3) | 1.9 (-0.1- 4.6) | 0.02 |
| Stomach | Dmax | -0.5 (-1.6 - 1.2) | -0.9 (-1.7- 0.3) | 0.12 |
| Small bowel | Dmax | -0.3 (-1.1 - 1.4) | 0.4 (-0.4 - 2.4) | 0.05 |