Table 4.
Results of the reproducibility study of RV parameters in 3DE multi-beat acquisition.
| Healthy Volunteers | ||||
|---|---|---|---|---|
| Intraobserver | Bias | 95% LOA | p | ICC, 95% CI |
| RV EDV (mL) | 11.5 ± 19.5 | −26.7 to +49.7 | 0.009 * | 0.88 (0.67–0.95) |
| RV ESV (mL) | 5.4 ± 10.3 | −14.8 to +25.6 | 0.018 * | 0.92 (0.79–0.97) |
| RV EF (%) | −0.2 ± 5.1 | −10.2 to +9.8 | 0.841 | 0.84 (0.62–0.93) |
| Interobserver | Bias | 95% LOA | p | ICC, 95% CI |
| RV EDV (mL) | 28.8 ± 21.7 | −13.7 to +71.3 | <0.001 * | 0.64 (−0.22–0.88) |
| RV ESV (mL) | 14.5 ± 12.8 | −10.6 to +39.6 | <0.001 * | 0.71 (−0.11–0.90) |
| RV EF (%) | 1.0 ± 8.1 | −14.9 to +16.9 | 0.558 | 0.60 (0.06–0.83) |
| Patients | ||||
| Intraobserver | Bias | 95% LOA | p | ICC, 95% CI |
| RV EDV (mL) | 1.6 ± 14.3 | −26.5 to +29.7 | 0.594 | 0.92 (0.81–0.96) |
| RV ESV (mL) | −2.0 ± 10.6 | −22.8 to +18.8 | 0.365 | 0.88 (0.72–0.95) |
| RV EF (%) | 2.1 ± 8.3 | −14.2 to +18.4 | 0.225 | 0.72 (0.38–0.88) |
| Interobserver | Bias | 95% LOA | p | ICC, 95% CI |
| RV EDV (mL) | 1.1 ± 12.1 | −22.6 to +56.3 | 0.729 | 0.96 (0.89–0.99) |
| RV ESV (mL) | 1.9 ± 7.5 | −12.8 to +32.7 | 0.371 | 0.96 (0.89–0.99) |
| RV EF (%) | −1.3 ± 5.5 | −12.0 to +29.0 | 0.410 | 0.81 (0.43–0.94) |
* statistically significant (p < 0.05); RV: right ventricle. 3DE: three-dimensional echocardiography. RV EDV: right ventricular end-diastolic volume. RV ESV: right ventricular end-systolic volume. RV EF: right ventricular ejection fraction. LOA: limits of agreement. p: paired student t-test. ICC: intraclass correlation. CI: confidence interval.