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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2016 Oct 20;64(2):374–390. doi: 10.1109/TUFFC.2016.2619913

Fig. 7.

Fig. 7

One cycle of quasilinear focal waveforms pF (θ) for different transducer focusing angles characterized by F-number: F# = 0.9, 1, 1.5. Here θ=2πf0t is the dimensionless time. A relative time shift between the waveforms is introduced for better visibility