TY - T1的心室质量指数使用磁铁ic resonance imaging accurately estimates pulmonary artery pressure JF - European Respiratory Journal JO - Eur Respir J SP - 1519 LP - 1524 DO - 10.1183/09031936.02.00014602 VL - 20 IS - 6 AU - Saba, T.S. AU - Foster, J. AU - Cockburn, M. AU - Cowan, M. AU - Peacock, A.J. Y1 - 2002/12/01 UR - //www.qdcxjkg.com/content/20/6/1519.abstract N2 - Magnetic resonance imaging (MRI) can provide accurate anatomical measurements of the cardiac ventricles. This study investigated whether a calculated ventricular mass index (VMI) would provide an accurate means of estimating pulmonary artery pressure noninvasively, and compared the results with conventional Doppler echocardiography and invasive measurement. A total of 26 subjects referred for investigation of pulmonary hypertension were studied by MRI and echocardiography within 2 weeks of cardiac catheterisation. The correlations for mean pulmonary artery pressure were as follows: VMI (ratio of right ventricular mass over left ventricular mass) r=0.81; pulmonary artery systolic pressure (echocardiography) r=0.77. The confidence intervals for the VMI were narrower than for echocardiography. Sensitivity and specificity for pulmonary hypertension were 84 and 71% respectively for the VMI compared with 89 and 57% for echocardiography. The calculated ventricular mass index provides an accurate and practical means of estimating pulmonary artery pressure noninvasively in pulmonary hypertension and may provide a more accurate estimate than Doppler echocardiography. This may be because it reflects the right ventricular response to sustained pulmonary hypertension over a long period and is not influenced by short-term physiological variables affecting echocardiography, such as heart rate, posture, hydration status and oxygen supplementation. ER -