Table 3.

Experimental BSC estimation errors when analyzing the 150–180 μm phantom.

Transducer	Errμ				Errσ
η1	η2	${\eta }_3^G$	η3	η1	η2	${\eta }_3^G$	η3
2.25 MHz, f∕2.7	2.54 ± 0.19	0.63 ± 0.19	1.74 ± 0.19	0.63 ± 0.19	1.13 ± 0.14	1.13 ± 0.14	1.12 ± 0.14	1.13 ± 0.14
5 MHz, f∕3	2.24 ± 0.28	0.96 ± 0.28	1.79 ± 0.28	0.99 ± 0.28	1.31 ± 0.17	1.26 ± 0.16	1.30 ± 0.17	1.26 ± 0.16
7.5 MHz, f∕4	2.71 ± 0.31	1.53 ± 0.31	2.27 ± 0.31	1.53 ± 0.20	1.27 ± 0.16	1.20 ± 0.14	1.24 ± 0.15	1.20 ± 0.14