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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2019 Feb 7;66(5):834–848. doi: 10.1109/TUFFC.2019.2898127

Fig. 9.

Fig. 9.

Blood-to-background SNR (top), CNR (middle), and GCNR (bottom) (± standard error) vs. ensemble size is plotted for baseline (teal), SVD (orange), CFPD (purple), and CFPD+SVD (black) with adaptive demodulation (AD) (dotted) and without (solid) for (a) 1mm/s simulations (b) 5mm/s phantom and (c) 1mm/s phantom. Baseline is plane wave synthetic focusing beamforming with a conventional IIR filter and no AD. AD was applied for all cases using a 10λ kernel size and 1ms slow-time lag. Simulated data had a blood-to-noise ratio of 0dB and a tissue-to-blood ratio of 40dB. For both simulations and phantoms, a 7.8125MHz transmit frequency was used.