Right ventricular responses to abnormal preload and afterload: a comparison of right ventricular regional displacement by cardiac MRI to elevated right heart pressures by catheterization
نویسندگان
چکیده
Methods Research subjects included 10 normal volunteers undergoing CMR and 36 patients undergoing clinically indicated right and left heart catheterization and a research CMR within 5 hours. Cine images were acquired to evaluate RV volumes and RVEF. Radial and longitudinal RV segmental displacement during systole were evaluated at the right sided septal endocardium and RV free wall on 4-chamber cine images using Feature Tracking software. Hemodynamics assessed during catheterization included RVSP, RVEDP, PASP, mean PAP and LVEDP. In normal controls, RVSP was estimated by echocardiography.
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