Measurement of left ventricular volumes in man by single-plane cineangiocardiography.
Measurement of left ventricular volumes in man by single-plane cineangiocardiography.
复制标题
通过单平面电影血管造影测量人体左心室容积。
DOI：
10.1097/00004424-196904020-00005
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发表时间：
1969
影响因子：
6.7
通讯作者：
Kennedy Jw
中科院分区：
文献类型：
--
作者：
Kass Is;Kennedy Jw
由双平面心血管造影测量左心室容量是一种重要的血流动力学工具。方法需要从单平面电影心血管造影中获得类似信息。对16例患者进行了双平面心血管造影和LV电影心血管造影检查。图像增强器至左心室中心的距离由对侧斜位透视确定，并在此水平上拍摄1cm2网格。放映35 mm的电影胶片，在一个心动周期内在每一帧上追踪不透光的LV。用椭球公式计算左心室容积。最长长度直接测量。假设两个短轴相同，并从平面测量的面积和长度导出。从1-cm2网格的投影图像导出了放大倍数和针垫失真的校正因子。双平面体积由道奇方法确定。电影LVV经常高估双平面LVV，但相关性很高(r=0.967，SEE=28.8ml)。两种方法计算的每搏量和射血分数的相关系数分别为0.788.84和0.88。
The measurement of left ventricular volumes (LVV) from biplane angiocardiograms is an important hemodynamic tool. Methods to obtain similar information from single-plane cineangiocardiograms are needed. Sixteen patients were studied by both biplane angiocardiograms and LV cineangiocardiography in the RAO position. The distance from the image intensifier to the center of the LV was determined by fluoroscopy in the opposite oblique, and a 1-cm 2 grid was filmed at this level. The 35-mm cine film was projected and the opacified LV traced on each frame throughout one cardiac cycle. LVV was calculated using an ellipsoidal formula. The longest length was measured directly. The two minor axes were assumed to be the same and derived from the planimetered area and length. A correction factor for both magnification and pin cushion distortion was derived from the projected image of the 1-cm 2 grid. Biplane volumes were determined by the Dodge method. The cine LVV regularly overestimated biplane LVV but the correlation was high (r= 0.967, SEE= 28.8 ml). The cine LVV can be corrected to equal the more precise biplane method with the formula: Volume (B)= Volume (C)× 0.788+ 8.4 ml. Comparison of the two methods for calculating stroke volume and ejection fraction showed correlation coefficients of 0.84 and 0.88.