Cross correlation of computed tomography(CT) and hyperpolarised (HP) 3He magnetic resonance imaging (MRI) for the 29 healthy subjects demonstrating imperfect agreement between the two imaging modalities
| CT | HP 3He MRI | |||
| Normal | Mild | Moderate | Severe | |
| Normal | 15 | 5 | 0 | 0 |
| Mild | 4 | 4 | 0 | 0 |
| Moderate | 1 | 0 | 0 | 0 |
| Severe | 0 | 0 | 0 | 0 |
Data are presented as n.