Velocity fluctuation reduction in vector Doppler ultrasound using a hybrid single/dual-beam algorithm.
In order to reduce the fluctuations in the velocity magnitude estimate, we propose a modification to the standard algorithm for reconstructing the (two component) vector velocity from the measured Doppler shifts in two directions. This uses the standard dual-beam algorithm, combined with temporal smoothing, to find only the velocity angle, then uses the single-beam algorithm to estimate the velocity magnitude. We present initial data showing the significant reduction in velocity estimate fluctuation that this hybrid method achieves compared to the standard algorithm.
Steel
Robin
R
Fish
Peter J
PJ
Ramnarine
Kumar V
KV
Criton
Aline
A
Routh
Helen F
HF
Hoskins
Peter R
PR
D000465:Algorithms; D001783:Blood Flow Velocity; D001808:Blood Vessels / Q000000981:diagnostic imaging* / Q000502:physiology; D003198:Computer Simulation; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D019047:Phantoms, Imaging; D011786:Quality Control; D018608:Ultrasonography, Doppler / Q000295:instrumentation / Q000379:methods*