scholarly journals Early two-dimensional echocardiography in acute myocardial infarction A study of left ventricular wall motion abnormalities.

1984 ◽  
Vol 25 (3) ◽  
pp. 301-309 ◽  
Author(s):  
Sudhir K. BHATNAGAR ◽  
Abdul Razzak AL-YUSUF ◽  
Jiri KOLAR
Keyword(s):  
Myocardial Infarction ◽  
Wall Motion ◽  
Left Ventricular ◽  
Ventricular Wall ◽  
Two Dimensional ◽  
Left Ventricular Wall Motion ◽  
Wall Motion Abnormalities ◽  
Ventricular Wall Motion ◽  
Dimensional Echocardiography ◽  
Two Dimensional Echocardiography

Computerized Quantification Analysis of Left Ventricular Wall Motion from Echocardiograms

1997 ◽  
Vol 19 (2) ◽  
pp. 138-144 ◽  
Author(s):  
Tainsong Chen ◽  
Tzu-Pei Chen ◽  
Liang Miin Tsai
Keyword(s):  
Wall Motion ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Ventricular Wall ◽  
Two Dimensional ◽  
Left Ventricular Wall Motion ◽  
Clinical Tool ◽  
Ventricular Wall Motion ◽  
Dimensional Echocardiography ◽  
Two Dimensional Echocardiography

Two-dimensional echocardiography (2-D echo) imaging is a more attractive clinical tool than other modalities that either involve radiation exposure or are too slow to image heart motion in real-time. Computer-aided analysis of left ventricular (LV) wall motion provides quantitative parameters for diagnosis. This study presents a computerized model for quantitative analysis of left ventricular wall motion from two-dimensional echocardiography by the application of image processing algorithms, including automatic threshold estimation, contrast stretching, boundary detection and border smoothing. The wall motion measurements rely primarily on sequential changes from end-diastolic to end-systolic frames in the left ventricular contours of apical four-chamber view echocardiograms. Left ventricular wall motion was analyzed on the 30 segments of 5 patients with acute myocardial infarction. The results from the computerized model were compared to those obtained from qualitative analysis of echocardiograms by an experienced clinical cardiologist who was unaware of the results of quantitative data.

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