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. Author manuscript; available in PMC: 2010 Apr 13.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2010;57(2):340–352. doi: 10.1109/TUFFC.2010.1414

Fig. 6.

Fig. 6

(a) Percent standard deviation of scatterer size estimates vs. the number of independent A-lines averaged when an 11 wavelength window is used; (b) percent standard deviation of scatterer size estimates vs. window length when 9 independent A-lines are averaged. Results are for the VFX13-5 transducer and the Welch spectral estimation method. The theoretical values are calculated according to equation (5) assuming a rectangular window and equation (6).