Real-time three-dimensional echocardiography for measurement of left ventricular volumes.
Real-time three-dimensional echocardiography for measurement of left ventricular volumes.
复制标题
用于测量左心室容积的实时三维超声心动图。
DOI：
10.1016/s0002-9149(99)00591-3
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Panza,JA
中科院分区：
文献类型：
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作者：
Schmidt,MA;Ohazama,CJ;Agyeman,KO;Freidlin,RZ;Jones,M;Laurienzo,JM;Brenneman,CL;Arai,AE;vonRamm,OT;Panza,JA
左心室容量是预测心脏病患者预后的重要指标。虽然有几种方法可以评估左心室容量，但大多数方法都有重要的内在局限性。实时三维超声心动图(RT3D ECHO)是一种能够瞬时获取容积图像的新技术。本研究的目的是验证RT3D ECHO计算的左心室容量，并确定其在心脏病患者中的应用价值。为此，4名正常人和21名心脏病患者在同一天接受了磁共振成像(MRI)和RT3D ECHO。MRI计算的LV体积与RT3D ECHO计算的LV体积之间有很强的相关性(r=0.91；y=20.1+0.71x；见28ml)。磁共振测量的左心室容量大于实时三维超声心动图(126vs110±65ml；p=0.002)，这可能是由于磁共振成像时的心率低于实时三维超声心动图的心率(62±11vs79±16次/分；p=0.0001)。观察者内和观察者间的变异性分析显示，RT3D ECHO测量LV容量的一致性指数很高。因此，使用RT3D ECHO测量LV容量是准确和可重复性的。这项技术扩大了超声在心脏患者无创评估中的应用，为心血管疾病的研究提供了一种新的工具。
Left ventricular (LV) volumes are important prognostic indexes in patients with heart disease. Although several methods can evaluate LV volumes, most have important intrinsic limitations. Real-time 3-dimensional echocardiography (RT3D echo) is a novel technique capable of instantaneous acquisition of volumetric images. The purpose of this study was to validate LV volume calculations with RT3D echo and to determine their usefulness in cardiac patients. To this end, 4 normal subjects and 21 cardiac patients underwent magnetic resonance imaging (MRI) and RT3D echo on the same day. A strong correlation was found between LV volumes calculated with MRI and with RT3D echo (r = 0.91; y = 20.1 + 0.71x; SEE 28 ml). LV volumes obtained with MRI were greater than those obtained with RT3D echo (126 ± 83 vs 110 ± 65 ml; p = 0.002), probably due to the fact that heart rate during MRI acquisition was lower than that during RT3D echo examination (62 ± 11 vs 79 ± 16 beats/min; p = 0.0001). Analysis of intra- and interobserver variability showed strong indexes of agreement in the measurement of LV volumes with RT3D echo. Thus, LV volume measurements with RT3D echo are accurate and reproducible. This technique expands the use of ultrasound for the noninvasive evaluation of cardiac patients and provides a new tool for the investigational study of cardiovascular disease.