Table 3.
Cardiac magnetic resonance imaging results.
| Reference range | Abnormal | ||
|---|---|---|---|
| Left ventricular ejection fraction (short axis, %) | 60.8 ± 5.7 | 57–77* | 16 (17.4) |
| Left ventricular ejection fraction (axial, %) | 60.8 ± 5.1 | – | – |
| Left ventricular end diastolic volume (ml) | 155.9 ± 35.2 | – | – |
| Right ventricular ejection fraction (short axis, %) | 59.6 ± 5.5 | Female, 51–71; male, 52–72* | 8 (9.5) |
| Right ventricular end diastolic volume (ml) | 161.1 ± 36.7 | – | – |
| Native T1 (ms) | 994.4 ± 29.2 | 990.8 ± 34.3** | – |
| Post-contrast T1 (ms) | 521.4 ± 37.5 | – | |
| Extracellular volume % | 27.5 ± 4.4 | – | – |
| T2 basal (ms) | 49.3 ± 2.5 | 47.3 ± 1.8*** | – |
| T2 mid (ms) | 50.3 ± 3.1 | 47.7 ± 2.2*** | – |
| T2 apical (ms) | 52.5 ± 3.8 | 49.8 ± 3.1*** | – |
| Left atrium size (cm2) | 20.7 ± 3.8 | Female, 13–27; male, 15–29* | 5 (5.2) |
| Right atrium size (cm2) | 20.3 ± 3.9 | 14–30* | 1 (1.0) |
| Inferior vena cava size (cm) | 1.7 ± 0.3 | – | – |
| Stress perfusion imaging (abnormal) | 0 (0) | – | – |
| Late gadolinium enhancement (abnormal) | 2 (2.2) | – | – |
| Pericardial effusion | – | – | |
| Minimal | 3 (3.1) | – | – |
| Small | 4 (4.2) | – | – |
| Moderate | 1 (1.0) | – | – |
Data expressed as number (%) or mean ± SD. Data for T2 basal and mid, left and right atrium size and pericardial effusion was available for 96, left ventricular ejection fraction (axial, %) and native T1 for 95, and Inferior vena cava size for 94, post-contrast T1 and late gadolinium enhancement for 93, left ventricular ejection fraction (short axis, %) and left/right ventricular end diastolic volume for 92, stress perfusion imaging for 89, extracellular volume for 87, and right ventricular ejection fraction (short axis, %) for 84 cases.
*Petersen et al.38. **Reference values derived from 18 age, sex and scanner matched controls. ***Reference values derived from 28 age, sex and scanner matched controls.
Results of our electrocardiography analysis are displayed as Supplementary Table 1 and Supplementary Fig. 5, and discussed in detail in our Supplementary appendix.