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Table 1 Correlations between 1Dir, 3Dir PC-MRI and SSFP cine imaging stroke volume at different acquisition levels above the aortic valve. A positive bias was observed for 1Dir PC-MRI while a smaller negative bias was observed for 3Dir PC-MRI.

From: Peak velocity estimation in aortic stenosis patients using a fast three-directional two-dimensional phase contrast technique in a single breath-hold: comparison to unidirectional phase contrast MRI and transthoracic echocardiography

 

Plane 0

Plane1

Plane2

 

ρc

Bias ± SD (ml)

ρc

Bias ± SD (ml)

ρc

Bias ± SD (ml)

1Dir PC-MRI

0.85

7 ± 15

0.88

5 ± 12

0.88

4 ± 12

3Dir PC-MRI

0.89

-2 ± 13

0.89

-3 ± 12

0.86

-4 ± 14

  1. ρc: Lin's Concordance Correlation Coefficient