Uren R F, Newman H N, Hutton B F, Cormack J, Bernstein L, Allen L, Dyer I
Radiology. 1983 May;147(2):541-5. doi: 10.1148/radiology.147.2.6836136.
A geometric method of measuring absolute left ventricular volumes from gated blood-pool studies obtained in a single-plane modified left anterior oblique view was evaluated prospectively in 30 patients who also underwent single-plane contrast ventriculography. The gated studies used a 30 degrees straight-bore slant-hole collimator with the holes slanted caudally. Left ventricular end-diastolic volume was calculated using the area-length method, with semiautomatic definition of the left ventricular region of interest and the maximum length of the left ventricle. Ejection fraction was determined from the left ventricular time/activity curve. The left ventricular end-systolic volume was derived using the end-diastolic volume and ejection fraction. Correlation coefficients between the two methods were 0.93 for end-diastolic volume, 0.95 for end-systolic volume, and 0.91 for ejection fraction. This method provided accurate and highly reproducible measurements of actual left ventricular volumes and was easily applicable in routine clinical studies.
在30例同时接受单平面对比心室造影的患者中，前瞻性评估了一种从单平面改良左前斜位门控血池研究中测量绝对左心室容积的几何方法。门控研究使用了一个30度直孔斜孔准直器，孔向尾侧倾斜。使用面积-长度法计算左心室舒张末期容积，半自动定义左心室感兴趣区域和左心室的最大长度。射血分数由左心室时间/活动曲线确定。左心室收缩末期容积通过舒张末期容积和射血分数推导得出。两种方法之间的相关系数，舒张末期容积为0.93，收缩末期容积为0.95，射血分数为0.91。该方法提供了对实际左心室容积的准确且高度可重复的测量，并且易于应用于常规临床研究。
