Improved Contrast-Enhanced Power Doppler Using a Coherence-Based Estimator.
IEEE Transactions on Medical Imaging(2017)
Abstract
While plane-wave imaging can improve the performance of power Doppler by enabling much longer ensembles than systems using focused beams, the long-ensemble averaging of the zero-lag autocorrelation R(0) estimates does not directly decrease the mean noise level, but only decreases its variance. Spatial variation of the noise due to the time-gain compensation and the received beamforming aperture ul...
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Key words
Doppler effect,Coherence,Correlation,Imaging,Ultrasonic imaging,Decorrelation,Blood
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