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Table 1 Intra-Class Correlation (ICC) between two scans.

From: Reproducibility of phase-contrast MRI in the coronary artery: towards noninvasive pressure gradient measurement and quantification of fractional flow reserve

 

Velocity Encoding Direction

Averaged Velocity

Absolute Maximum Velocity

Pressure Gradient (ΔP)

  

Phase 1

Phase 2

Phase 1

Phase 2

r = 0.508 p<0.05

Volunteers

Z

0.932

0.968

0.935

0.959

 
 

X

0.578

0.447

0.828

0.861

 
 

Y

0.931

0.918

0.804

0.779

 

Phantom

Z

0.992

0.988

r = 0.768 p<0.05

 

X

0.918

0.934

 
 

Y

0.979

0.969

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