人类左心室中的纤维取向与射血分数。
Fiber orientation and ejection fraction in the human left ventricle.
作者信息
Sallin E A
出版信息
Biophys J. 1969 Jul;9(7):954-64. doi: 10.1016/S0006-3495(69)86429-5.
Abstract
Fiber orientation and ventricular geometry are incorporated in a mathematical model for ejection fraction of the human left ventricle. The inadequacy of circularly oriented or "constrictor" fibers to explain high ejection fractions of cylindrical, spherical, or ellipsoidal reference ventricles is demonstrated. A class of "helical" fibers is then introduced from which ejection fractions predicted by physiologic amounts of fiber shortening on cylindrical and ellipsoidal reference ventricles are shown to be consistent with those calculated from biplane angio-cardiographic films.
摘要
纤维方向和心室几何形状被纳入一个用于人类左心室射血分数的数学模型中。研究表明，圆形排列或“收缩型”纤维不足以解释圆柱形、球形或椭圆形参考心室的高射血分数。随后引入了一类“螺旋形”纤维，结果显示，在圆柱形和椭圆形参考心室上，由生理量的纤维缩短所预测的射血分数与根据双平面心血管造影电影计算得出的射血分数一致。
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