Table 2.
Ventilation and perfusion relationships at baseline and post‐EBV.
| Left lung | Left lower lobe (target lobe) | Left upper lobe | Right lung | Right lower lobe | Right middle lobe | Right upper lobe | Whole lung | |
|---|---|---|---|---|---|---|---|---|
| V/Q‐PET/CT baseline | ||||||||
| Ventilation (%) | 46 | 7 | 38 | 54 | 7 | 6 | 41 | N/A |
| Perfusion (%) | 45 | 4 | 41 | 55 | 4 | 5 | 46 | N/A |
| CT volume (%) | 47 | 13 | 34 | 53 | 11 | 7 | 34 | N/A |
| Matched V/Q defects (%) | 13 | 30 | 6 | 10 | 21 | 20 | 5 | 12 |
| Unmatched V/ Q defects (%) | 37 | 67 | 26 | 34 | 76 | 44 | 18 | 35 |
| Normal V/Q (%) | 50 | 3 | 68 | 56 | 3 | 36 | 77 | 53 |
| V/Q‐PET/CT post‐EBV | ||||||||
| Ventilation (%) | 43 | 6 | 38 | 57 | 9 | 9 | 38 | N/A |
| Perfusion (%) | 45 | 5 | 40 | 55 | 7 | 8 | 41 | N/A |
| CT volume (%) | 46 | 14 | 32 | 54 | 15 | 9 | 29 | N/A |
| Matched V/Q defects (%) | 31 | 75 | 12 | 26 | 56 | 40 | 7 | 29 |
| Unmatched V/Q defects (%) | 13 | 16 | 11 | 14 | 25 | 15 | 7 | 13 |
| Normal V/Q | 56 | 9 | 76 | 60 | 19 | 46 | 86 | 58 |
CT, computed tomography; EBV, endobronchial valve; PET, photon emission tomography.
Ventilation, perfusion, and CT volume results are expressed as percentage of whole lung volume; matched, unmatched, and normal V/Q results are expressed as percentage of lobe volume.