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By capturing three-dimensional motions of small markers on the heart of a small laboratory animal with 1000 fps stereo images, we realized a cardiac motion analysis system to quantify the rate of change in the myocardial area of its heart, which indicates the myocardium's activity for a rhythmic expansion/contraction motion in a local area. Using this cardiac motion capture system, we analyzed the...
Accurate localization of myocardial viability is important in diagnosis of infarction. Regional strain function provides excessive information for clinical decision making but comparison of strain tensor profiles across differing tissue types is usually difficult due to multi-variate nature of tensors. It is desirable to describe tensors with simplified scalar indices which are more mathematically...
Four-dimensional (4D), or equivalently, 3D + time, analysis is useful for comprehensive assessment cardiac function, especially in the asymmetric left ventricle (LV) after myocardial infarction (MI). This paper presents a 4D-model-based method for ultrasound assessment of cardiac contractile function in mice. Echocardiographic image sequences were acquired at high frequency (30 MHz) from the hearts...
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