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Variation of XV metrics over multiple XV reconstructions and breaths.
| Run-to-run variation (Mean standard deviation) | Breath-to-breath variation (Mean difference) | |
|---|---|---|
| Tidal volume | 3.7 ml (1.3%)* | 20 ml (5.7%)* |
| Ventilation heterogeneity | 1.9% | 5.4% |
| Small-scale ventilation heterogeneity | 1.0% | 2.5% |
| Large-scale ventilation heterogeneity | 1.7% | 7.8% |
| Ventilation defect percentage | 0.6% | 1.7% |
Percentage of mean tidal volume measured across all cases.
