Table 4.
Average %VV and median Hscore values over sessions 1 and 2 generated from hyperpolarized 3He and 129Xe images for the three volunteers scanned with both gases
| 3He V2 | 129Xe V2 | 3He V3 | 129Xe V3 | 3He V6 | 129Xe V6 | |
|---|---|---|---|---|---|---|
| Acquisition, %VV | ||||||
| RV | 98.68 | 96.26 | 97.03 | NA | 95.41 | 88.88 |
| RV + 1L | 97.67 | 90.46 | 99.49 | 91.54 | 98.26 | 92.84 |
| FRC | 98.85 | 97.53 | 98.34 | 94.41 | 97.85 | 90.85 |
| FRC + 1L | 98.46 | 96.70 | 98.76 | 94.51 | 98.10 | 93.11 |
| TLC | 99.46 | 95.58 | 99.12 | 93.14 | 97.82 | 97.50 |
| Acquisition, Hscore | ||||||
| RV | 8.96 | 12.53 | 11.63 | NA | 10.16 | 16.16 |
| RV + 1L | 10.26 | 12.08 | 8.82 | 11.74 | 9.04 | 11.89 |
| FRC | 8.85 | 11.01 | 9.15 | 10.91 | 8.90 | 10.82 |
| FRC + 1L | 9.33 | 10.83 | 8.61 | 10.62 | 8.59 | 10.98 |
| TLC | 6.15 | 8.10 | 7.33 | 8.95 | 6.50 | 8.38 |
RV, residual volume; RV + 1L, residual volume plus 1 liter of gas mixture; FRC, functional residual capacity; FRC + 1L, functional residual capacity volume plus 1 liter of gas mixture; TLC, total lung capacity; V, volunteer; %VV, percent lung ventilated volume; Hscore, local heterogeneity score.