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. Author manuscript; available in PMC: 2019 Nov 1.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2018 Sep 12;65(11):2042–2053. doi: 10.1109/TUFFC.2018.2869810

TABLE VIII.

Uncertainties in STD and Bias of Layered Phantom with Uniform Backscatter. In each layer, the smallest values are highlighted in bold font.

	Layer 1		Layer 2		Layer 3
	LSq	DP	LSq	DP	LSq	DP
STD
α (dB/cm-MHz)	0.750	0.067	0.307	0.054	0.264	0.086
b (1/cm-sr-MHzⁿ)	7.170e-06	1.518e-06	8.701e-06	1.685e-06	1.479e-05	2.259e-06
n	3.095	0.454	3.385	0.490	3.252	0.588
Bias
α (dB/cm-MHz)	3.018	0.269	0.783	0.137	0.616	0.199
b (1/cm-sr-MHzⁿ)	2.877e-05	6.102e-06	2.214e-05	4.286e-06	3.429e-05	5.251e-06
n	12.457	1.826	8.630	1.249	7.585	1.370