Automated, on-line quantification of left ventricular dimensions and function by echocardiography with backscatter imaging and lateral gain compensation.
Automated, on-line quantification of left ventricular dimensions and function by echocardiography with backscatter imaging and lateral gain compensation.
复制标题
通过具有反向散射成像和横向增益补偿的超声心动图自动在线量化左心室尺寸和功能。
DOI：
10.1016/0002-9149(92)90056-5
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Sobel,BE
中科院分区：
文献类型：
--
作者：
Pérez,JE;Klein,SC;Prater,DM;Fraser,CE;Cardona,H;Waggoner,AD;Holland,MR;Miller,JG;Sobel,BE
为提供超声心动图对左室腔大小和功能的在线定量，对60例正常对照者和10例心功能不全患者进行了研究。使用一种新的超声成像系统，该系统被开发用于基于组织声学特性的定量评估来真实的实时检测和跟踪心室内膜血液边界。此外，横向增益补偿，一个强大的和新颖的图像增强程序，被用来提供即时测量和显示的空腔面积和功能指数的基础上，逐拍的兴趣区域内绘制的血池腔。在对照受试者中，短缩性舒张末期面积平均为13.1 ± 3.7 cm 2（SD），收缩末期面积为5.9 ± 2.7 cm 2，面积变化分数为55.6 ± 11.2%。心尖位的相应值分别为23.8 ± 4.5 cm 2、15.5 ± 3.4 cm 2和34.7 ± 7.8%。在每个视图中，腔面积变化的瞬时峰值速率在收缩期约为50 cm 2/s，在舒张期约为60 cm 2/s。面积和功能指数的系列测量在2至3周的间隔内是可重复的。扩张心室患者在舒张期和收缩期的平均心尖区面积值分别为49.1 ± 6.1 cm 2和43.1 ± 4.9 cm 2，面积变化分数为12.2 ± 3.0%。因此，在线超声心动图背向散射成像辅助自动边缘检测的结果是可重复的，能够方便，迅速和连续地描绘心功能不全在床边。
To provide on-line quantification of left ventricular cavity dimensions and function by echocardiography 60 control subjects and 10 patients with cardiac dysfunction were studied. A novel, ultrasound imaging system was used which was developed to detect and track, in real time, ventricular endocardial blood boundaries based on quantitative assessment of acoustic properties of tissue. In addition, lateral gain compensation, a robust and novel image enhancement procedure, was used to provide instantaneous measurement and display of cavity areas and functional indexes on a beat-by-beat basis within regions of interest drawn around the blood pool cavity. In control subjects, shortaxis end-diastolic area averaged 13.1 ± 3.7 cm2(SD), end-systolic area 5.9 ± 2.7 cm2, and fractional area change 55.6 ± 11.2%. Apical views yielded corresponding values of 23.8 ± 4.5 cm2, 15.5 ± 3.4 cm2and 34.7 ± 7.8%. Instantaneous peak rate of cavity area change approximated 50 cm2/s in systole and 60 cm2/s in diastole in each view. Serial measurements of area and functional index were reproducible over intervals of 2 to 3 weeks. Patients with dilated ventricles exhibited average apical view area values of 49.1 ± 6.1 cm2and 43.1 ± 4.9 cm2in diastole and systole with a fractional area change of 12.2 ± 3.0%. Thus, results with on-line echocardiographic backscatter imaging-assisted automated edge detection are reproducible and capable of delineating cardiac dysfunction conveniently, promptly and serially at the bedside.