[Angiography of the left ventricle: study of the kinetics of the wall. Practical applications and validation of results].

Authors present a new study of left ventricular local wall motion. A critical study about three methods is analysed. This original analysis method is based on the calculation of local ejection fractions from a mathematic model: a theoretical ideal systolic contour is evaluated from an ejection fraction value and for a left homogeneous contraction ventricular. The left regional wall motion is appreciated from the comparison between real systole and theoretical systole. On the one hand, this method has been studied in theory. On the other one, it has been validated in a group of 22 patients having not any cardiac anomaly. Then its use has been compared to the two classic radial and longitudinal methods in a twenty ventriculographies group with six different contraction anomalies. Regularly, it was used on about more than 1500 valvular and coronary patients since November 1981. The results of the left ventricular function study are coherent.