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Cardiac resynchronization therapy (CRT) has been successfully used in patients affected by heart failure and left ventricular (LV) systolic dysfunction with LV dissyncrony. However, a variable number of patients (20%-30%) do not respond favorably to CRT due to several possible, still uncertain factors. One possible cause is the displacement of the electrode tip from effectively resynchronizing stimulation...
Two-dimensional echocardiography (2DE) is routinely used in clinical practice to measure left ventricular (LV) mass, dimensions, and function. The reliability of these measurements is highly dependent on the ability to obtain nonforeshortened long axis (LA) images of the left ventricle from transthoracic apical acoustic windows. Real time three-dimensional echocardiography (RT3DE) is a novel imaging...
Right ventricular (RV) volume quantification from cardiac magnetic resonance imaging is based on manual tracing of endocardial boundaries and application of geometric modeling. This procedure is subjective, time-consuming and may bias volume measurements since the right ventricle is a complex structure that is not well suited to a geometric model. We developed a technique for RV endocardial surface...
A PC-based system for 2-D echocardiography image processing is presented. The system provides real time frame grabbing, image processing and picture archiving. Echocardiographic tracings stored on video-tape are played-back and several images can be digitized. Frame grabbing is ECG (electrocardiogram) gated. Image processing consists of image enhancement by noise cleaning filtering and ventricular...
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