Wyatt H L, Heng M K, Meerbaum S, Hestenes J D, Cobo J M, Davidson R M, Corday E
Circulation. 1979 Nov;60(5):1104-13. doi: 10.1161/01.cir.60.5.1104.
Cross-sectional echocardiography was used to quantify left ventricular mass noninvasively in 21 dogs. Short- and long-axis cross-sectional images of the left ventricle were reproducibly traced at endocardial and epicardial borders during stop-motion video-tape replay. We used area, length and diameter measurements to calculate left ventricular mass by seven mathematic models, including the standard formulas used with M-mode echocardiography and cineangiography. Calculated mass was compared with excised weight of the left ventricle by regression and percent error analyses. Formulas using short-axis areas and long-axis length resulted in higher correlation coefficients (0.94--0.95) and lower mean errors (6--7%) than for standard formulas. Since short-axis areas account for regional left ventricular irregularities, noninvasive quantification of left ventricular mass by cross-sectional echocardiography in dogs is most accurate with formulas using short-axis areas.
采用横断面超声心动图对21只犬的左心室质量进行无创定量分析。在定格录像回放过程中，可重复性地描绘左心室短轴和长轴横断面图像的心内膜和心外膜边界。我们使用面积、长度和直径测量值，通过七种数学模型计算左心室质量，包括M型超声心动图和心血管造影术使用的标准公式。通过回归分析和百分比误差分析，将计算得到的质量与左心室的切除重量进行比较。与标准公式相比，使用短轴面积和长轴长度的公式具有更高的相关系数（0.94 - 0.95）和更低的平均误差（6 - 7%）。由于短轴面积考虑了左心室区域的不规则性，因此在犬中使用短轴面积公式通过横断面超声心动图对左心室质量进行无创定量最为准确。
