Robert Petitclerc

TL;DR: This paper presents and tests a computer method to quantify the motion of the heart from digitized image sequences that computes on every point of an image the two-dimensional velocity vector which characterizes its motion from this image to the next.

TL;DR: Late results after successful percutaneous mitral commissurotomy were assessed by prospective clinical and echocardiographic follow-up andMagnitude of shunt, use of a Bifoil balloon, and smaller valve area after the procedure were predictors by multivariate analysis of the persistence of atrial shunting.

TL;DR: Difficulty in obtaining angulated views of the coronary vessels in a single transverse plane can be overcome by the systematic use of additional views in a sagittal plane, angulated approximately 25° either in a cranial or caudal direction or both.

TL;DR: Among 126 consecutive patients undergoing percutaneous mitral valvuloplasty, 34 were judged to be at high risk for surgery on the basis of age greater than 70 years, New York Heart Association functional class IV, severe pulmonary hypertension, need for associated coronary bypass or additional valve surgery, and echocardiographic score.

TL;DR: Clinical data studied with this procedure have indeed confirmed that velocity field could be obtained from myocardial speckle tracking; this allowed to characterize quantitatively theMyocardial dynamics, in particular with respect to local wall thickening and myocardium contraction during the cardiac cycle.