Table 3.
Geometric uncertainties for intrafraction motion on cine MRI. Mean of means (M), systematic error (Σtotal), and random error (σtotal) for all intrafraction motion and for breathing only (σresp).
| Parameter | LR | AP | SI | |
|---|---|---|---|---|
| Breast (prone) | M [mm] | 0.0 | −0.1 | −0.1 |
| Σtotal [mm] | 0.1 | 0.2 | 0.2 | |
| σtotal [mm] | 0.3 | 0.4 | 0.3 | |
| σresp [mm] | 0.3 | 0.4 | 0.3 | |
| Breast (supine) | M [mm] | 0.1 | −0.2 | −0.2 |
| Σtotal [mm] | 0.2 | 0.7 | 0.5 | |
| σtotal [mm] | 0.4 | 0.8 | 0.6 | |
| σresp [mm] | 0.5 | 0.8 | 0.6 | |
| Lymph nodes (supine) | M [mm] | −0.1 | −0.0 | −0.1 |
| Σtotal [mm] | 0.4 | 0.4 | 0.4 | |
| σtotal [mm] | 0.6 | 0.6 | 0.6 | |
| σresp [mm] | 0.7 | 0.7 | 0.7 |