Effect of Hyperoxia on Lung Uptake (Lung-to–Background Ratio)
| Tracer | Control | 2 Days | 4 Days | 7 Days | 14 Days | 21 Days |
| 99mTc-HMPAO | 3.79 ± 0.28 (n = 8) | 4.56 ± 0.35 (n = 3) | 5.32 ± 0.30* (n = 4) | 6.59 ± 0.49* (n = 5) | 6.31 ± 0.81* (n = 4) | 6.55 ± 0.51* (n = 8) |
| 99mTc-duramycin | 3.21 ± 0.12 (n = 6) | 3.37 ± 0.14 (n = 4) | 4.63 ± 0.12* (n = 5) | 4.86 ± 0.12* (n = 4) | 4.02 ± 0.11* (n = 3) | 3.35 ± 0.15 (n = 2) |
*P < 0.05 when compared with control value.
All data are mean ± SE.