Table 4 Bland-Altman and linear regression analysis between echo and CMR methods for AVA estimation.
TE (ms) | SV (mL) | Vpk (m/s) | VTIpk (cm) | AVAvol (cm2) | AVAflow (cm2) |
|---|---|---|---|---|---|
Bland-Altman bias ± 1.96SD | |||||
Echo | -5.14 ± 38.6 | - | - | - | - |
2.8 | 1.83 ± 63.9 | -0.41 ± 0.95 | -10 ± 28 | 0.15 ± 0.59 | 0.11 ± 0.81 |
2.0 | -10.9 ± 69.8 | -0.39 ± 0.97 | -9 ± 39 | 0.12 ± 0.44 | -0.08 ± 0.63 |
1.5 | -4.52 ± 41.8 | -0.38 ± 0.95 | -7 ± 30 | 0.11 ± 0.44 | 0.00 ± 0.39 |
Pearson linear regression r2/p-value | |||||
Echo | 0.27/0.05 | - | - | - | - |
2.8 | 0.30/0.03 | 0.54/< 0.01 | 0.53/< 0.01 | 0.10/0.24 | 0.11/0.23 |
2.0 | 0.37/0.02 | 0.41/< 0.01 | 0.23/0.07 | 0.26/0.05 | 0.01/0.92 |
1.5 | 0.57/< 0.01 | 0.56/< 0.01 | 0.49/< 0.01 | 0.31/0.04 | 0.57/< 0.01 |