Staggered Multiple-PRF Ultrafast Color Doppler

IEEE Transactions on Medical Imaging
Daniel PosadaDamien Garcia

Abstract

Color Doppler imaging is an established pulsed ultrasound technique to visualize blood flow non-invasively. High-frame-rate (ultrafast) color Doppler, by emissions of plane or circular wavefronts, allows severalfold increase in frame rates. Conventional and ultrafast color Doppler are both limited by the range-velocity dilemma, which may result in velocity folding (aliasing) for large depths and/or large velocities. We investigated multiple pulse-repetition-frequency (PRF) emissions arranged in a series of staggered intervals to remove aliasing in ultrafast color Doppler. Staggered PRF is an emission process where time delays between successive pulse transmissions change in an alternating way. We tested staggered dual- and triple-PRF ultrafast color Doppler, 1) in vitro in a spinning disc and a free jet flow, and 2) in vivo in a human left ventricle. The in vitro results showed that the Nyquist velocity could be extended to up to 6 times the conventional limit. We found coefficients of determination r(2) ≥ 0.98 between the de-aliased and ground-truth velocities. Consistent de-aliased Doppler images were also obtained in the human left heart. Our results demonstrate that staggered multiple-PRF ultrafast color Doppler is efficien...Continue Reading

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Citations

Jul 28, 2016·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Omar MansourJames C Lacefield
Oct 16, 2016·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Miaomiao ZhangOlivier Bernard
Dec 4, 2016·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Julia FaurieDamien Garcia
May 8, 2018·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Craig MadienaJonathan Poree
Aug 12, 2017·Physics in Medicine and Biology·Kondo Claude AssiDamien Garcia
Dec 8, 2021·Physics in Medicine and Biology·Florian VixègeDamien Garcia

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