A comparison of noninvasive MRI-based methods of estimating pulmonary artery pressure in pulmonary hypertension.

Purpose: To assess the accuracy of several noninvasive MRI-based estimators of pulmonary artery pressure by comparing them with invasive pressure measurement.

Materials And Methods: We compared five MRI methods with invasive pressure measurement by catheterization, in one group of pulmonary hypertension (PH) patients. Doppler echocardiography was included as a reference method.

Interventricular septal configuration at mr imaging and pulmonary arterial pressure in pulmonary hypertension.

Purpose: To investigate whether a relationship exists between septum shape and systolic pulmonary arterial pressure (PAP) in patients with pulmonary hypertension.

Materials And Methods: Study protocol was approved by institutional ethics review committee; all patients gave informed consent. Right-sided heart catheterization with vasodilator testing was performed in 39 adult subjects suspected of having pulmonary hypertension.

Effects of epoprostenol on right ventricular hypertrophy and dilatation in pulmonary hypertension.

Objectives: To gain more knowledge of changes in main pulmonary artery flow and right ventricular mass and volumes in patients with pulmonary hypertension during epoprostenol therapy.

Methods: Eleven patients (9 women) were evaluated before the start of therapy and every 4 months thereafter. Right and left ventricular volumes and masses were measured by cine MRI.