Table 2.
Interobserver agreement demonstrated as intraclass correlation coefficient (ICC) for measuring CTR and cardiac MRI parameters
| Parameter | ICC between observers |
|---|---|
| CTR | 0.937 (0.869–0.97) |
| LVEDV | 0.985 (0.962–0.994) |
| LVESV | 0.992 (0.942–0.997) |
| LVEF | 0.977 (0.936–0.99) |
| LV mass | 0.984 (0.965–0.993) |
| RVEDV | 0.846 (0.675–0.927) |
| RVESV | 0.975 (0.919–0.99) |
| RVEF | 0.935 (0.856–0.97) |
| LA volume | 0.977 (0.948–0.99) |
| LA area | 0.959 (0.914–0.98) |
| RA volume | 0.926 (0.845–0.965) |
| RA area | 0.91 (0.811–0.957) |
Values in parentheses are 95% confidence intervals
ICC intraclass correlation coefficient, CTR cardiothoracic ratio, MRI magnetic resonance imaging, LVEDV left ventricular end-diastolic volume, LVESV left ventricular end-systolic volume, LVEF left ventricular ejection fraction, LV left ventricle, RVEDV right ventricular end-diastolic volume, RVESV right ventricular end-systolic volume, RVEF right ventricular ejection fraction, LA left atrium, RA right atrium