Table 4.
The motion amplitude of the chest wall (six markers) and PTV margins (mm)
| ML | SI | AP | ||||
|---|---|---|---|---|---|---|
| Average | SD | Average | SD | Average | SD | |
| Mark 1 | 0.54 | 0.50 | 1.05 | 0.23 | 0.93 | 0.57 |
| Mark 2 | 0.59 | 0.50 | 0.98 | 0.51 | 1.13 | 0.69 |
| Mark 3 | 0.39 | 0.49 | 0.99 | 0.46 | 1.09 | 0.66 |
| Mark 4 | 0.54 | 0.50 | 1.01 | 0.60 | 1.00 | 0.79 |
| Mark 5 | 0.47 | 0.50 | 0.99 | 0.51 | 1.00 | 0.71 |
| Mark 6 | 0.43 | 0.50 | 1.13 | 0.46 | 1.13 | 0.62 |
| Total | 0.50 | 0.50 | 0.84 | 0.54 | 0.89 | 0.58 |
| Diaphragm | / | / | 15.70 | 3.60 | / | / |
| 95th Percentile | 1.00 | 2.00 | 2.00 | |||
| 0.45Aa | 0.45 | 0.90 | 0.90 | |||
| CROI margin | 3.95 | 2.22 | 2.87 | |||
| Total margin | 4.40 | 3.12 | 3.77 | |||
aWe used 0.45A linearly added to the calculated PTV margin according to the 95th percentile of amplitude (see [6]).