Table 4.
Interobserver and intraobserver reproducibility for RV volumes and EF by 3DE and CMRI
| Variable | EDV (mL) | ESV (mL) | SV (mL) | EF (%) |
|---|---|---|---|---|
| 3DE intraobserver | ||||
| ICC | 0.992 | 0.974 | 0.96 | 0.906 |
| COV (%) | 3.0 | 6.6 | 8.0 | 6.9 |
| RD (%) | 4.3 | 9.4 | 11.3 | 9.8 |
| Bias | −0.2 | 4.6 | −4.7 | −3.6 |
| LOA | −16.2 to 15.8 | −12.8 to 22.0 | −19.0 to 9.7 | −12.2 to 5.0 |
| SD | 8.2 | 8.9 | 7.3 | 4.4 |
| CMRI intraobserver | ||||
| Bias | −2.6 | −2.4 | −0.1 | 0.7 |
| LOA | −15.4 to 10.2 | −11.3 to 6.5 | −11.8 to 11.6 | −5.9 to 7.2 |
| SD | 6.5 | 4.6 | 6.0 | 3.4 |
| 3DE interobserver | ||||
| ICC | 0.955 | 0.965 | 0.867 | 0.827 |
| COV (%) | 7.7 | 8.0 | 16.6 | 9.4 |
| RD (%) | 10.3 | 11.4 | 23.5 | 13.3 |
| Bias | −12.5 | −2.0 | −10.6 | −4.0 |
| LOA | −40.0 to 15.1 | −24.0 to 20.1 | −33.2 to 12.1 | −16.2 to 8.3 |
| SD | 14.1 | 11.3 | 11.6 | 6.3 |
| CMRI interobserver | ||||
| Bias | −1.9 | −2.80 | 1.1 | 0.9 |
| LOA | −18.2 to 14.4 | −13.1 to 7.5 | −9.3 to 11.5 | −4.1 to 5.8 |
| SD | 8.3 | 5.2 | 5.3 | 2.5 |
ESV, End-systolic volume; LOA, limits of agreement; RD, relative difference.