Skip to main content
Fig. 3 | Journal of Cardiovascular Magnetic Resonance

Fig. 3

From: Non-invasive measurement using cardiovascular magnetic resonance of changes in pulmonary artery stiffness with exercise

Fig. 3

RAC measurement and PWV measurement with flow-area method for a representative subject. a Time-lapse of magnitude and phase images of main PA cross-section during early systole. b and c Flow rates and cross-sectional area (CSA) of the main PA were assessed based on the contours shown in the images. RAC is measured using maximum and minimum CSA throughout the cardiac cycle d Flow and CSA are measured from the phase contrast-derived velocity maps integrated over the magnitude-derived area. PWV velocity is calculated as the slope of QA plot at early systole

Back to article page