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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: IEEE Trans Med Imaging. 2017 Jun 13;36(9):1979–1991. doi: 10.1109/TMI.2017.2714901

TABLE IV.

Average bandwidths (BWs) and corresponding velocities at −60dB after adaptive demodulation with amplitude demodulation, phase demodulation, phase & amplitude demodulation with varying median filter sizes, and phase & amplitude demodulation with no median filtering for data acquired with the L12-5 probe and SPW acquisition method (7.8MHz imaging frequency, imaging case 2). Standard error of the mean is shown in parenthesis for each measurement.

Demod. Method BW After (Hz) Velocity After
(mm/s)
Amp 168 (± 25.2) 8.29 (± 1.24)
Phase 35.8 (± 7.35) 1.76 (± 0.36)
Phase & Amp. (No Med. Filt.) 4.78 (± 1.08) 0.24 (± 0.05)
Phase & Amp. (Med. Filt. 35) 10.5 (± 6.49) 0.52 (± 0.32)
Phase & Amp. (Med. Filt. 71) 14.6 (± 7.12) 0.72 (± 0.35)
Phase & Amp. (Med. Filt. 141) 28.0 (± 7.53) 1.38 (± 0.37)