DEMONSTRATION OF 3-DIMENSIONAL VECTOR FLOW ESTIMATION USING BANDWIDTHAND 2 TRANSDUCERS ON A FLOW PHANTOM

A method of performing three-dimensional (3-D) velocity vector estimat ion with two transducers is demonstrated on a flow phantom using the D oppler spectra's mean frequencies and bandwidths, The results are comp ared with 3-D vector estimates computed from Doppler mean frequencies obtained with a five-transducer system, It is shown that the two-trans ducer vector Doppler system which uses bandwidth can improve on the ac curacy of a three-transducer vector Doppler system which relies only o n Doppler mean frequencies.