Table 2.
Cardiac magnetic resonance imaging and angiography*
| Parameters | Mean values |
|---|---|
| Group A | |
| Right ventricular outflow dimension by magnetic resonance (mm) | 19.3±1.2 (18-20) |
| Right ventricular outflow dimension by angiography (mm) | 21.1±1.2 (19-23) |
| Right ventricular outflow dimension by balloon sizing (mm) | 20.9±1.7 (19-24) |
| Mean difference (angiography vs. balloon) (mm) | 0.3±0.8 (−1-+1) |
| Mean difference (magnetic resonance vs. balloon) (mm) | 0±1.7 (−2-1) |
| LPA stenosis or hypoplasia | 1/7 |
| Group B | |
| Pulmonary regurgitant fraction (%) | 45.6±11.8 (26-64) |
| Indexed right ventricular end-diastolic volume (ml) | 167.26±25.9 (120-230) |
| Right ventricular ejection fraction (%) | 46.9±9.6 (27-65) |
| Right ventricular outflow dimension by magnetic resonance (mm) | 25.1±4.2 (19-32) |
| Right ventricular outflow dimension by angiography (mm) | 26.1±3.3 (20-32) |
| Right ventricular outflow dimension by balloon sizing (mm) | 28.0±3.3 (23-33) |
| Mean difference (angiography vs. balloon) (mm) | 1.9±2.4 (−8-+2) |
| Mean difference (magnetic resonance vs. balloon) (mm) | 2.8±2.9 (−10-+1) |
| LPA stenosis or hypoplasia | 4/22 |
*Values expressed in mean±SD (range). SD: Standard deviation, LPA: Left pulmonary artery