Ty -jour t1-使用磁共振成像的心室质量指数准确估算肺动脉压力JF-欧洲呼吸杂志T.S.Au -Foster，J。Au -Cockburn，M.Au -Cowan，M.Au -Au -Peacock，A.J。Y1-2002/12/01 UR -http：//www.qdcxjkg.com/content/20/6/1519.Abstract N2-磁共振成像（MRI）可以提供心脏心室的准确解剖测量。这项研究调查了计算出的心室质量指数（VMI）是否会提供一种准确的方法来无创估计肺动脉压力，并将结果与​​常规多普勒超声心动图和侵入性测量进行了比较。在心脏导管插入后的2周内，通过MRI和超声心动图研究了共有26名用于研究肺动脉高压的受试者。平均肺动脉压力的相关性如下：VMI（右心室质量比左心室质量的比率）r = 0.81；肺动脉收缩压（超声心动图）r = 0.77。VMI的置信区间比超声心动图更窄。VMI对肺动脉高压的敏感性和特异性分别为84和71％，而超声心动图术的敏感性和71％为89和57％。 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 -