Measurement of Two-Dimensional Blood Velocity Vectors by the Ultrasonic Speckle Projection Technique
- 1 October 1993
- journal article
- Published by SAGE Publications in Ultrasonic Imaging
- Vol. 15 (4), 286-303
- https://doi.org/10.1177/016173469301500402
Abstract
A technique has been developed for measuring the two in-plane components of blood velocity using ultrasound. The principle is based on analyzing a time sequence of successive images of the speckle pattern, and forming spatial projections of the resulting three-dimensional data set. The mathematics may be understood in terms of sections through a three-dimensional Fourier transform of the original data. The technique has been tested with data from a computer-controlled scanner using a tissue-mimicking phantom, and with data from a commercial ultrasound scanner using images of flowing blood in a jugular vein. In both cases, velocity vectors with many different orientations were measured, demonstrating the feasibility of the method. A less restrictive real-time implementation is suggested.Keywords
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