Table 1.
Imaging parameters of the 4D flow MRI sequence.
Fig 1.
Placement of the double oblique axes to obtain the PA measurement plane.
Fig 2.
Placement of the plane at the level of the pulmonary valve (top).
After contouring, visualization of the streamlines during diastole showing a narrowing due to the valve leakage (bottom).
Table 2.
Baseline characteristics of the two groups of patients.
Table 3.
Pulmonary pressures and resistances in RHC according to PH groups.
Fig 3.
Examples of vortices observed through the PA streamlines (arrows), compared to a normal appearance (left panel).
RHC mPAP was 22 mmHg, 30 mmHg and 60 mmHg from left to right panel, respectively. Bias (solid lines) and LOA (dashed lines) are displayed.
Table 4.
Hemodynamic and morphological measurements from RHC and MRI.
Table 5.
Correlations between PAPm or PAPs and MRI measurements.
Table 6.
Multiple linear regression models.
Fig 4.
Scatter plots with regression lines and Bland-Altman plots for the comparison between MRI pressure estimations (mPAP and sPAP) and pulmonary arterial pressures measured via RHC.
Table 8.
Bland-Altman bootstrap analysis.
Table 7.
Hemodynamic and morphological measurements from RHC and MRI.
Fig 5.
Bland-Altman plots comparing MRI pressure estimations (mPAP and sPAP) from the calculated model with pulmonary arterial pressures measured via RHC in the validation cohort.