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. Author manuscript; available in PMC: 2010 Apr 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Apr;56(4):715–726. doi: 10.1109/TUFFC.2009.1094

Table IV.

KVFD Approach Parameter Values (α, E0, and τ′) Obtained from Gelatin Phantom and Normal Glandular Breast Tissue Responses.

KVFD model Gelatin phantom Normal breast tissue
Parameter* TD fit FD fit TD fit FD fit
α 0.543 0.536 0.830 0.800
E 0 16.6 14.6 22.9 22.3
τ′ (s) 59.3 54.7 15.4 15.2
Acquisition time (s) 500 180
*

TD fit corresponds to a time-domain fitting of the strain curve to (17), and FD fit to the fitting of the loss modulus in the Fourier domain to (20). Both processings give similar results, though the Fourier domain fitting is significantly faster.