Table 3.
Inter- observer agreement
| Observer 1 | Observer 2 | Bias (LoA) | %Bias | Pearson r | ICC (95% CI) | |
|---|---|---|---|---|---|---|
| All Patients | ||||||
| TTE, ml (±SD) | 79 ± 27 | 77 ± 27 | 2 (−22–24) | 2% | 0.91a | 0.95 (0.92–0.97) |
| CE-MRA, ml (±SD) | 111 ± 45 | 101 ± 43 | 10 (−6–25) | 9% | 0.98a | 0.99 (0.99–0.99) |
| Sinus rhythm | ||||||
| TTE, ml (±SD) (n = 41) | 75 ± 19 | 72 ± 19 | 3 (−19–26) | 5% | 0.82a | 0.90 (0.82–0.95) |
| CE-MRA, ml (±SD) (n = 15) | 92 ± 23 | 84 ± 23 | 9 (−6–23) | 10% | 0.95a | 0.97 (0.92–0.99) |
| Atrial Fibrillation | ||||||
| TTE, ml (±SD) (n = 24) | 8 ± 37 | 86 ± 35 | -2 (−25–22) | 2% | 0.95a | 0.97 (0.94–0.99) |
| CE-MRA, ml (±SD) (n = 14) | 117 ± 35 | 110 ± 34 | 8 (−5–20) | 7% | 0.98a | 0.99 (0.97–1.00) |
Abbreviations: CE-MRA contrast enhanced magnetic resonance imaging, ICC intraclass correlation coefficient, TTE transthoracic echocardiography
aSignificant at p < 0.01