Table 3 Safety margins attributed to interfractional prostate motion (see Table 1) calculated with the van Herk formula (margin = 2.5 ∑ + 0.7 σ)
From: Appropriate patient instructions can reduce prostate motion
Reference | Margin [mm] LR | Margin [mm] SI | Margin [mm] AP |
|---|---|---|---|
Current study Interfraction motion | 1.8 | 4.7 | 4.0 |
van Herk 2004 [8] Interfraction motion | 2.9 | 5.4 | 8.6 |
Soete et al 2007 [13] Interfraction motion | 4.4 | 12.1 | 12.7 |
Tanyi et al 2010 [14] Interfraction motion | 1.6 | 8.9 | 10.2 |
Tanyi et al 2010 Residual error | 2.5 | 2.6 | 2.3 |
Tanyi et al 2010 Intrafraction motion | 2.8 | 3.7 | 3.2 |