Hiraishi S, DiSessa T G, Jarmakani J M, Nakanishi T, Isabel-Jones J B, Friedman W F
Am J Cardiol. 1982 Dec;50(6):1368-75. doi: 10.1016/0002-9149(82)90476-3.
The ability of 2-dimensional echocardiography to measure right ventricular (RV) volume and ejection fraction was assessed in 22 children with congenital heart disease. From the apical 4 chambers 2-dimensional echocardiographic image, the long-axis length of the right ventricle was measured and the area planimetered. On the anteroposterior and lateral cineangiocardiographic planes, the right ventricle was separated into 2 parts: RV sinus and outflow tract. The longest length, inflow tract length, and area of the sinus were measured from biplane cineangiographic views. The echographic long-axis length correlated well with the longest length of the RV sinus measured from both anteroposterior and lateral cineangiographic views at both end-systole and end-diastole. Moreover, the echographic area correlated well with the sinus area obtained from both cineangiographic views. From these regression analyses, the echographic long axis length and area were corrected to the angiographic longest length and area of the sinus. The new corrected echographic longest length and area were applied to 3 formulas (2 biplane and 1 uniplane) to calculate the sinus volume of the right ventricle. Total RV volume was then derived from the sinus volume. RV volumes and ejection fraction determined by 2-dimensional echocardiography were compared with those obtained from biplane cineangiography using Simpson's rule method. All formulas tested predicted RV volumes and ejection fraction with equal accuracy. Thus, 2-dimensional echocardiography can assess RV volume and ejection fraction in children with congenital heart disease.
在22例先天性心脏病患儿中评估了二维超声心动图测量右心室（RV）容积和射血分数的能力。从心尖四腔二维超声心动图图像测量右心室的长轴长度并使用面积计测量面积。在前后位和侧位心血管造影平面上，将右心室分为两部分：右心室窦部和流出道。从双平面心血管造影图像测量窦部的最长长度、流入道长和面积。超声心动图长轴长度与在收缩末期和舒张末期从前后位和侧位心血管造影图像测量的右心室窦部最长长度相关性良好。此外，超声心动图面积与从两种心血管造影图像获得的窦部面积相关性良好。通过这些回归分析，将超声心动图长轴长度和面积校正为造影测量的窦部最长长度和面积。将新校正的超声心动图最长长度和面积应用于3个公式（2个双平面和1个单平面）以计算右心室窦部容积。然后从窦部容积得出右心室总容积。使用辛普森法则将二维超声心动图测定的右心室容积和射血分数与双平面心血管造影获得的结果进行比较。所有测试公式预测右心室容积和射血分数的准确性相同。因此，二维超声心动图可评估先天性心脏病患儿的右心室容积和射血分数。
