Table 5.

ESD and ESC estimates derived from experimental data corresponding to the 150–180 μm glass bead phantom. ka and G_p were calculated using the transducer nominal center frequency, with ka corresponding to a scatterer diameter of 165 μm.

Transducer	ka	Gp	ESD (μm)				ESC (scatt./mm3)
η1	η2	${\eta }_3^G$	η3	η1	η2	${\eta }_3^G$	η3
2.25 MHz, f∕2.7	0.78	6.6	169.4 ± 4.4	161.2 ± 4.8	163.3 ± 4.7	161.1 ± 4.8	5.9 ± 0.6	4.6 ± 0.6	5.7 ± 0.7	4.6 ± 0.6
5 MHz, f∕3	1.73	16.8	163.5 ± 5.9	165.3 ± 5.5	164.0 ± 5.9	165.3 ± 5.5	5.4 ± 0.8	4.0 ± 0.6	4.8 ± 0.7	4.0 ± 0.6
7.5 MHz, f∕4	2.59	19.2	131.8 ± 49.9	135.8 ± 48.9	131.1 ± 50.7	135.8 ± 48.9	88.7 ± 121.3	63.8 ± 94.7	84.8 ± 114.2	63.9 ± 94.9