First breath signal reduction (%) of hyperpolarised helium (3He)
| Lung number | Lobe | ROI volume (ml) | Bronchus (%) | Spiracle (%) |
|---|---|---|---|---|
| *p = 0.001 (paired t test). | ||||
| U, upper; L, lower; ROI, region of interest. | ||||
| 3 | U | 522 | 9.8 | 18 |
| L | 430 | 0.2 | 28 | |
| 4 | U | 629 | 0 | 52 |
| L | 476 | 0 | 69 | |
| 5 | U | 450 | 0 | 55 |
| L | 329 | 20 | 59 | |
| 6 | U | 373 | 24 | 44 |
| L | 560 | 0 | 73 | |
| 7 | U | 520 | 33 | 78 |
| L | 385 | 8 | 74 | |
| Mean | 467 | 9.5* | 55* | |
| SD | 12 | 20 | ||