Fig. 3.
Results of LSQ and DP methods using approach 2 where n is not fixed to 2 and is estimated. The simulated phantom has three layers and 20 instances of added zero-mean Gaussian noise. The error bars show the standard deviation over the 20 instances of noise for attenuation coefficient (a), backscatter coefficient magnitude B (b), backscatter power law n (c), scaled ESS A (d), and acoustic concentration (e). The black dashed line is the known values.