速度追踪——一种用于定量分析纵向心肌功能的新方法。

Velocity tracking--a novel method for quantitative analysis of longitudinal myocardial function.

作者信息

Bjällmark Anna, Larsson Matilda, Winter Reidar, Westholm Carl, Jacobsen Per, Lind Britta, Brodin Lars-Ake

机构信息

School for Technique and Health, Royal Institute of Technology, Huddinge, Sweden.

出版信息

J Am Soc Echocardiogr. 2007 Jul;20(7):847-56. doi: 10.1016/j.echo.2006.11.024.

DOI:10.1016/j.echo.2006.11.024

PMID:17617311

Abstract

Doppler tissue imaging is a method for quantitative analysis of longitudinal myocardial velocity. Commercially available ultrasound systems can only present velocity information using a color Doppler-based overlapping continuous color scale. The analysis is time-consuming and does not allow for simultaneous analysis in different projections. We have developed a new method, velocity tracking, using a stepwise color coding of the regional longitudinal myocardial velocity. The velocity data from 3 apical projections are presented as static and dynamic bull's-eye plots to give a 3-dimensional understanding of the function of the left ventricle. The static bull's-eye plot can display peak systolic velocity, late diastolic tissue velocity, or the sum of peak systolic velocity and early diastolic tissue velocity. Conversely, the dynamic bull's-eye plot displays how the myocardial velocities change over one heart cycle. Velocity tracking allows for a fast, simple, and intuitive visual analysis of the regional longitudinal contraction pattern of the left ventricle with a great potential to identify characteristic pathologic patterns.

摘要

多普勒组织成像技术是一种用于定量分析心肌纵向速度的方法。市售超声系统仅能使用基于彩色多普勒的重叠连续色标来呈现速度信息。这种分析耗时且不允许在不同投影中同时进行分析。我们开发了一种新方法，即速度追踪，它使用区域心肌纵向速度的逐步颜色编码。来自3个心尖投影的速度数据以静态和动态靶心图的形式呈现，以便对左心室功能有三维的理解。静态靶心图可以显示收缩期峰值速度、舒张晚期组织速度，或收缩期峰值速度与舒张早期组织速度之和。相反，动态靶心图显示心肌速度在一个心动周期中的变化情况。速度追踪能够对左心室区域纵向收缩模式进行快速、简单且直观的视觉分析，具有识别特征性病理模式的巨大潜力。