ANGLE INDEPENDENT ULTRASONIC BLOOD-FLOW DETECTION BY FRAME-TO-FRAME CORRELATION OF B-MODE IMAGES

We have previously reported initial clinical results of a novel blood velocity imaging technique utilizing a two-dimensional correlation search applied to consecutively acquired echoes. We describe both the physical principles underlying this technique and test tank experiments which define its performance under a variety of conditions. The results indicate that, unlike Doppler flow imaging systems, this technique defines the flow velocity vector in two dimensions and is not subject to aliasing.