Table 4 Summary table of the different concepts to determine ITV in SI direction
From: The analysis of respiration-induced pancreatic tumor motion based on reference measurement
Margin strategy | Constant 10mm | Constant 20mm | Reference measurement | Constant 15 or 20 mm | Constant 15 or 20 mm- man | Constant 15 or 20 mm- woman | Regression analysis all, y = 13 + 0.4064•x | Regression analysis- man y = 8.5 + 0.7015•x | Regression anylysis- woman y = 17 + 0.1804•x |
|---|---|---|---|---|---|---|---|---|---|
TAU (mm) | 3.6 | 0.5 | 2.3 | 0.5 | 0.3 | 0.7 | 0.5 | 0.3 | 0.7 |
TAU > 3mm (%) | 40% | 5% | 30% | 5% | 0% | 9% | 5% | 0% | 9% |
TAU > 1mm (%) | 55% | 15% | 50% | 20% | 11% | 27% | 15% | 11% | 18% |
TAO (mm) | 1.6 | 8.5 | 2.7 | 5.6 | 6.2 | 5.1 | 6.7 | 5.6 | 7.4 |
TAO > 3mm (%) | 20% | 70% | 25% | 65% | 78% | 55% | 85% | 67% | 73% |
TAO > 1mm (%) | 55% | 95% | 50% | 95% | 100% | 91% | 95% | 100% | 91% |
Margin- average (mm) | 10 | 20 | 12.1 | 17 | 16.7 | 17.3 | 17.9 | 15.8 | 19.4 |