CHOOSING VARIABLES IN TISSUE VELOCITY IMAGING

摘要

The invention provides methods and systems for reducing noise in myocardial tissue velocity imaging such as ultrasound Doppler imaging or MRI. By adjusting recording factors and choosing apparatus settings and/or image analysis parameters in a systematic and consistent way, the quality of e.g. strain or strain rate imaging can be drastically improved. The invention reduces the noise by choosing values of variables, which lead to reduced or minimal beat-to-beat (BBV) variations in the imaged quantity such as average velocity, strain, strain rate or displacement or time derivatives of these.