Table 2. Acoustic Properties for five probes.

Probe(MHz)	Attenuation, dB/cm			nBUA, dB/(cm MHz)			Speed of sound, m/s
	Mean	SD	Min.-Max.	Mean	SD	Min.-Max.	Mean	SD	Min.-Max.
0.5	7.68	4.06	0.58–14.22	28.7	6.37	18.82–41.93	1514.41	16.81	1500.91–1556.16
1	18.86	7.49	6.98–30.32	17.31	10.39	5.91–43.99	1508.61	4.97	1502.03–1518.23
1.5	29.96	11.23	12.60–44.96	20.7	6.94	7.47–38.12	1502.36	2.19	1500.20–1507.02
2.25	41.4	12.07	19.08–68.18	16.52	5.35	5.55–29.78	1500.6	0.59	1500.04–1502.44
3.5	52.96	15.33	32.04–87.29	12.46	5.16	10.36–16.45	1500.15	0.15	1500.00–1500.61