Table 1.
This table shows the baseline values of the delivery times and the average beam‐on delays for three VMAT plan deliveries with the BDR and the default gun hold‐on time of 1.38 s. Column 1 is the patient and corresponding plan information. Column 2 is the gating window (the 100% gating window means non‐gated beam delivery). Columns 3, 4, and 5 are baseline values of the actual delivery time, ideal delivery time, and the average beam‐on delay
| Patient & Plan Info. | Gating Window | Actual Delivery Time (min) | Ideal Delivery Time (min) | Average Beam‐On Delay (s) |
|---|---|---|---|---|
| 1 | 100% | 5.65 | 5.65 | NA |
| One 360° arc, | 77% | 9.97 | 7.34 | 1.06 |
| 12 Gy, 2417 MUs | 66% | 14.22 | 8.56 | 1.59 |
| 2 | 100% | 5.32 | 5.32 | NA |
| One 180° arc, | 77% | 9.20 | 6.91 | 1.00 |
| 12 Gy, 2101 MUs | 66% | 13.80 | 8.06 | 1.66 |
| 3 | 100% | 4.58 | 4.58 | NA |
| One 180° arc, | 77% | 8.13 | 5.95 | 1.07 |
| 12 Gy, 1854 MUs | 66% | 12.13 | 6.94 | 1.71 |