Cardiac medical image processing device, processing system and medium

Abstract

The invention relates to a cardiac medical image processing device, a processing system and a medium. The processing device comprises a processor, configured to identify a mitral valve basal point, acardiac apex vertex and outer and inner edges of a left ventricular myocardium by using a first learning network based on a heart image of a long-axis section; arrange an upper edge by utilizing a first connecting line of the mitral valve base point; define the left ventricular myocardium by the upper edge, the inner edge and the outer edge, the second connecting line of the midpoint of the firstconnecting line and the apex serves as the midline, evenly divide the left ventricular myocardium on the two sides, and achieve segment division; determine a first strain condition of each section inthe long-axis section, wherein the first strain condition comprises an area change condition of the corresponding section; and determining a second strain condition of the corresponding segment in thevertical direction based on the area change condition of each segment. All myocardial segments can be automatically, accurately and rapidly recognized, the global or local three-dimensional strain condition of the left ventricle can be determined, and myocardial strain and functional conditions can be conveniently and comprehensively evaluated.

Description

technical field [0001] The present disclosure generally relates to image processing and analysis. More specifically, the present disclosure relates to a cardiac medical image processing device, processing system and medium. Background technique [0002] The traditional parameter for evaluating overall myocardial function is mainly left ventricular ejection fraction. This single-dimensional parameter cannot comprehensively evaluate the overall myocardial function, let alone accurately reflect the diastolic and contractile movements of the local myocardium. Damage is often a gradual process from local to overall. [0003] Myocardial strain (MS) refers to the deformation of the myocardium during the cardiac cycle, which refers to the percentage change of the size of the myocardium in a certain dimension relative to the initial myocardial length or the state of no stress, and can be used to interpret the elongation of the myocardium Or shorten, thicken, or thin. Myocardial st...

AI Technical Summary

Problems solved by technology

Due to the semi-automatic operation, the instrument cannot automatically identify the myocardial area, and the doctor needs to manually outline it in the first frame of the image. At the same time, the instrument’s built-in outline curve tracking function cannot accurately outline the edge of the myocardial area in the subsequent dynamic video, so it cannot be accurately detected. Change track of myocardial speckle

It is necessary to select several pairs of myocardial spots and detect their average trajectory to calculate the myocardial strain rate. However, for patients with non-uniform myocardial thickness such as hypertrophic cardiomyopathy, only the distance change between limited pairs of myocardial spots cannot truly reflect the overall myocardial strain rate. deformation

Furthermore, the shape of myocardial speckles in each frame of image is not exactly the same, and there are often some changes, and even some myocardial speckles may not appear in some frames, which brings difficulties to tracking

Images