Table 3.
The IQM signal of each segment for a representative beam of a pharyngeal tonsil IMRT plan. The plan was delivered correctly with the planed modulation and with a simulated error, where each segment of the plan was delivered without modulation and the MLC leaves open
| Segment # | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| Correct delivery signal (counts) | 45,836 | 23,544 | 26,631 | 555 | 2764 | 593 | 4305 | 11,122 | 10,538 |
| Simulated error signal (counts) | 490,104 | 286,685 | 585,695 | 158,296 | 421,544 | 141,033 | 78,807 | 394,401 | 276,328 |
| % Difference | 969% | 1118% | 2099% | 28439% | 15149% | 23666% | 1731% | 3446% | 2522% |