Real time computerization of two-dimensional echocardiography.
Real time computerization of two-dimensional echocardiography.
复制标题
二维超声心动图的实时计算机化。
DOI：
10.1016/0002-8703(81)90616-5
复制
发表时间：
1981
影响因子：
4.8
通讯作者：
Berman,D
中科院分区：
文献类型：
--
作者：
Garcia,E;Gueret,P;Bennett,M;Corday,E;Zwehl,W;Meerbaum,S;Corday,S;Swan,HJ;Berman,D
本文介绍了一个计算机系统，用于对二维超声心动图（2DE）的左心室横断面图像进行真实的实时采集、增强处理、分析和显示。新方法将标准医学成像计算机系统与任何当前2DE单元的视频输出耦合，使用128 × 128或64 × 64矩阵窗口，并将真实的时间30帧/秒的数字化图像存储在磁盘上。计算机化的逐拍和逐帧处理采用时空平滑和通过标准阈值和二阶导数技术自动检测内分泌界面。多个视图显示在真实的时间与256级的灰色和彩色。该方法用于分析和图形显示整个心动周期的逐帧变化。此外，区域壁运动和厚度进行了分析，在12个部门的个人横截面使用标准化的角度细分起源于中心的区域和索引的外部参考点。开发了一种算法来校正横截面界面定义，从常用的后缘到前缘到更有效的前缘到前缘轮廓技术。心脏收缩的空间和时间变化的计算机分析在几个临床和实验应用中得到了证实，包括自行车运动试验、急性心肌梗死的调查和干预措施的评估。初步评价表明，新的真实的时间计算机数字采集和数据分析是一个重大的进步，定量左心室功能使用二维超声心动图。
A computerized system was developed for real time acquisition, enhanced processing, analysis, and display of cross-sectional images of the left ventricle derived by two-dimensional echocardiography (2DE). The new methodology couples a standard medical imaging computer system to the video output of any current 2DE unit, uses a 128 × 128 or 64 × 64 matrix window and stores the real time 30 frames/sec digitized images on a magnetic disk. Computerized beat-to-beat and frame-by-frame processing employs space-time smoothing and automatic detection of endocardial interfaces by standard threshold and second derivative techniques. Multiple views are displayed in real time with 256 levels of gray and color. The methodology was used to analyze and graphically display frame-by-frame changes throughout the cardiac cycle. In addition, regional wall motlon and thickness were analyzed in 12 sectors of individual cross-sections using a standardized angular subdivision originating at the center of area and indexed by an external reference point. An algorithm was developed to correct cross-sectional interface definition from the commonly used trailing-to-leading edge to the more valid leading-to-leading outline technique. Computerized analysis of spatial and temporal variations of cardiac contraction were demonstrated in several clinical and experimental applications, including bicycle exercise testing, investigation of acute myocardial infarction, and assessment of interventions. Initial evaluation indicates that the new real time computerized digital acquisition and data analysis represents a major advance toward quantitation of left ventricular function using 2DE.