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Efficient design of ultrasound true-velocity flow mapping

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2 Author(s)
Kadah, Y.M. ; Biomed. Eng. Program, Minnesota Univ., MN, USA ; Tewfik, A.H.

The authors describe the general theory of the classical Doppler technique for flow mapping and show that its main assumptions do not generally hold for ultrasound imaging. They then develop a generalized model for frequency-domain flow mapping in practical ultrasound imaging situations. Using this model, the authors show that it is possible to compute the true velocity from single-aperture configurations. They discuss improving the resolution and velocity estimation accuracies and propose a novel approach based on a generalization of the radar ambiguity function model. They also consider the same problems for time-domain techniques. They propose a generalization of the correlation technique that takes into account the ultrasound field effect, and show that it is theoretically possible to obtain true-velocity flow maps from single-aperture configurations. Finally, the authors discuss the relative advantages and disadvantages of both frequency-domain and time-domain techniques

Published in:

Engineering in Medicine and Biology Magazine, IEEE  (Volume:15 ,  Issue: 5 )

Date of Publication:

Sep/Oct 1996

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