In the fields of cardiology and medical imaging,<unk>  (STE) is an echocardiographic imaging technique. It analyzes the motion of tissues in the heart by using the naturally occurring<unk>  pattern in the myocardium (or motion of blood when imaged by ultrasound). This method of documentation of myocardial motion is a noninvasive method of definition for both vectors and velocity. When compared to other technologies seeking noninvasive definition of ischemia,<unk><unk>  seems a valuable endeavor. The<unk>  pattern is a mixture of interference patterns and natural acoustic reflections. These reflections are also described as<unk> s or markers. The pattern being random, each region of the myocardium has a unique<unk>  pattern (also called patterns, features, or fingerprints) that allows the region to be traced. The<unk>  pattern is relatively stable, at least from one frame to the next. In post processing this can be tracked consecutively frame to frame and ultimately resolved into angle-independent two-dimensional (2D) and three-dimensional strain-based sequences (3D). These sequences provide both quantitative and qualitative information regarding tissue deformation and motion.
Speckle tracking echocardiography
Tissue Doppler echocardiography
Doppler echocardiography
Intracoronary optical coherence tomography
Magnetocardiography
Ballistocardiography
Fractional flow reserve
Coronary CT angiography