Scatter Correction in ROIs Measured as Scatter Fraction Coefficient k Under Uniform and Nonuniform Radiolabeled Aerosol Distributions
| Source | Projection | Lung region | Central region |
|---|---|---|---|
| Uniform | Anterior | 0.400 ± 0.023 | 0.349 ± 0.020 |
| Uniform | Posterior | 0.465 ± 0.034 | 0.451 ± 0.016 |
| Uniform | Arithmetic mean | 0.433 ± 0.028 | 0.400 ± 0.017 |
| Nonuniform | Anterior | 0.429 ± 0.035 | 0.345 ± 0.017 |
| Nonuniform | Posterior | 0.467 ± 0.031 | 0.470 ± 0.005 |
| Nonuniform | Arithmetic mean | 0.448 ± 0.032 | 0.408 ± 0.008 |
Values are mean ± SD.