Analysis of locus and strain of left ventricular wall motion by MR tagg-image

摘要

The research was focused on the left ventricular wall motion. One heart period was considered, and the movement of pixel intensity between two sequential images was visibility by the optical flow calculation. The transition in the micro-space, locus tracing and principal strain were calculated to evaluate the dynamics of the myocardial wall motion. Deformation around the anti-watch can better be detected by optical flow images than by the indication vector with the image of the ejection early phases, and anterior and septal were greatly indicated. It is explained by a slightly different phase from each of the base, middle and apex. It goes in the center direction inside pericardial cavity in lateral posterior, and a vector was indicated in equator part (middle) and apex. It was understood it puts it on the apex from base, and about transition quantity of the locus tracing increases from the viewpoint of grade and it was doing in the image of locus tracing calculation.