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3-Dimensional Target Excursions during IMRT Delivery
| Left-Right | Superior-Inferior | Anterior-Posterior | ||||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| 5 mm Tracking Limit Exceeded ≥ 1 second (out of 638 fractions) | 10 | 1.6% | 176 | 28% | 159 | 25% |
| 5 mm Tracking Limit Exceeded ≥ 30 seconds (out of 638 fractions) | 1 | < 0.5% | 44 | 7% | 31 | 5% |
| Target Excursion ≥ 1 cm (out of 638 fractions) | 0 | 0 | 20 | 3% | 13 | 2% |
| Area Under Curve ≥ 1 (out of 487 fractions) | 1 | <0.5% | 39 | 8% | 30 | 6% |
