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. Author manuscript; available in PMC: 2019 Sep 1.
Published in final edited form as: Ultrasonics. 2018 Apr 25;89:34–45. doi: 10.1016/j.ultras.2018.04.011

Table 5.

Quantitative Spatial Resolutions (−6 dB) of Figs. 3 and 4

Simulated Resolution Phantom DAS DAS+CF ADMIRE ADMIRE+CF
lateral (mm) @(−0.4, 1.0) cm 1.49 1.09 1.42 1.03
@(−0.2, 2.0) cm 1.75 1.26 1.73 1.23
@( 0, 3.0) cm 1.09 0.90 1.04 0.83
@(0.2, 4.0) cm 1.56 1.23 1.50 1.15
@(0.4, 5.0) cm 2.41 1.73 2.35 1.67
μlateral ± σlateral 1.66 ± 0.48 1.24 ± 0.31 1.61 ± 0.49 1.18 ± 0.31
axial (mm) @(−0.4, 1.0) cm 0.57 0.62 0.60 0.64
@(−0.2, 2.0) cm 0.56 0.57 0.58 0.59
@( 0, 3.0) cm 0.43 0.45 0.46 0.48
@(0.2, 4.0) cm 0.42 0.44 0.46 0.48
@(0.4, 5.0) cm 0.42 0.43 0.43 0.45
μaxial ± σaxial 0.48 ± 0.08 0.50 ± 0.09 0.51 ± 0.08 0.53 ± 0.08
Experimental Wire Phantom DAS DAS+CF ADMIRE ADMIRE+CF
lateral (mm) @(−1.5, 1.0) cm 1.40 1.24 1.29 1.23
@(−1.0, 2.0) cm 1.71 1.36 1.40 1.40
@( 0, 3.0) cm 1.43 1.41 1.40 1.36
@(1.0, 4.0) cm 1.59 1.19 1.44 1.35
@(1.5, 5.0) cm 1.99 1.61 1.72 1.66
μlateral ± σlateral 1.63 ± 0.24 1.37 ± 0.17 1.45 ± 0.16 1.40 ± 0.16
axial (mm) @(−1.5, 1.0) cm 1.13 1.11 1.05 1.08
@(−1.0, 2.0) cm 1.15 1.07 0.89 1.01
@( 0, 3.0) cm 0.78 0.79 0.77 0.78
@(1.0, 4.0) cm 0.84 0.83 0.85 0.83
@(1.5, 5.0) cm 0.86 0.85 0.75 0.74
μaxial ± σaxial 0.95 ± 0.18 0.93 ± 0.15 0.86 ± 0.12 0.88 ± 0.15