Strain rate imaging in the left ventricle Tissue Doppler-derived strain rate imaging is observer-dependent and subject to potential pitfalls and technical limitations. A new robust and ultrafast algorithm is being developed to provide a strain rate mapping of the myocardium by echocardiography. This novel modality will be used to better assess the diastolic and systolic functions in patients with heart failure. The proposed method is directly applicable to 3-D ultrasound.
	Cardiovascular vector flow mapping based on color Doppler Conventional color Doppler provides only partial information on the blood flow. A vector representation of blood flow in the cardiovascular system can be reconstructed from the Doppler velocities only. The technique that we propose - which is robust, unsupervised and ultrafast - can provide a detailed mapping of the cardiovascular velocity field.
Doppler vortography Recent in vivo studies show that the dynamics of intracardiac vortices seems to play an important role in the left ventricular filling. We have developed a new echocardiographic tool, called Doppler vortography, to detect and quantify the intracardiac vortices from conventional Doppler. The BVS (blood vortex signature) mapping reveals the presence of vortices whose core vorticity can be easily determined.