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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. 3.

Fig. 3.

Example tissue and noise eigenvalue cutoff selection. (a) Tissue cutoff 1 is selected by finding when the slope of the singular value magnitude curve goes below a certain threshold (e.g., 5). (b) Tissue cutoff 2 is selected by finding the first temporal eigenvector mean Doppler frequency to go above a certain threshold (e.g., 1Hz). (c) The noise cutoff is selected by fitting a line to the singular value magnitude curve and finding when the curve starts to deviate from the line by more than a certain threshold (e.g. 0.05).