. Author manuscript; available in PMC: 2017 Feb 1.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2016 Feb;63(2):222–232. doi: 10.1109/TUFFC.2016.2515366

Table III.

Shear wave center frequency and Mean Absolute Percentage Error (MAPE).

	Mean shear wave center frequency [95%CI, n = 4], Hz				Mean Absolute Percentage Error (mean ±SD, n = 4)
Sample 1	Frequency, MHz				Frequency, MHz
Case	3.00	3.46	4.09	4.50	3.00	3.46	4.09	4.50

Attenuation and Aberration*	217.07 [123.49, 310.65]	127.64 [58.27, 197.01]	130.08 [54.92, 205.24]	142.33 [27.41, 257.25]	30.93 ± 22.18	52.57 ± 26.31	51.07 ± 28.85	48.31 ± 40.40
Only Phase Aberration*	269.92 [266.61, 273.23]	267.89 [264.87, 270.91]	263.41 [260.65, 266.17]	264.63 [260.05, 269.21]	0.90 ± 0.78	1.06 ± 0.30	1.38 ± 0.59	1.40 ± 0.77
Only Attenuation^ˆ	363.41 [362.99, 363.83]	359.76 [357.37, 362.15]	351.22 [297.63, 404.81]	380.49 [358.93, 402.05]	1.36 ± 0.07	2.07 ± 0.80	11.03 ± 8.80	12.23 ± 6.49
Reference experimental*	270.73	269.11	265.85	267.48
Reference simulations^ˆ	358.44	343.90	353.66	339.02
Sample 2
Case
Attenuation and Aberration**	113.01 [81.65, 144.37]	116.76 [101.98, 131.54]	81.12 [65.48, 96.76]	92.33 [54.69, 129.97]	58.26 ± 11.82	56.61 ± 5.60	69.49 ± 6.00	65.48 ± 14.33
Only Phase Aberration**	265.85 [250.29, 281.41]	261.38 [246.36, 276.50]	246.34 [228.84, 263.84]	241.46 [224.25, 258.67]	3.90 ± 4.29	4.08 ± 4.61	7.34 ± 6.72	8.61 ± 6.65
Only Attenuation^ˆˆ	370.73 [364.26, 376.90]	367.07 [364.78, 369.36]	331.71 [259.91, 403.51]	308.54 [262.79, 354.29]	3.40 ± 1.76	3.79 ± 0.69	6.21 ± 7.21	8.99 ± 5.92
Reference experimental**	270.73	269.11	265.85	267.48
Reference simulations^ˆˆ	358.44	343.90	353.66	339.02

*, **: Experiments;

^ˆ, ^ˆˆ: Simulations