Table 1.

Acoustical properties of experimental and numerically simulated reference (Ref) and sample (Sam) phantoms.

Acoustical properties			Speed of sound (m/s)		Scatterer diameter (μm)		Scatterer intensity (dB)		Attenuation coefficient [(dB/cm)/MHz)]
Group	Set	Fig.	Ref	Sam	Ref	Sam	Ref	Sample	Ref	Sam	Runs
1	1	2a	1540	1540	50	50	0	−3 −2 −1 0 1 2 3	0.5	0.5	70
		2b	1540	1540	50	50	0	−3 −2 −1 0 1 2 3	0.5	0.3	70
		2c	1540	1540	50	50	0	−3 −2 −1 0 1 2 3	0.5	0.7	70
	2	3a	1540	1540	25	25	0	−3 −2 −1 0 1 2 3	0.5	0.5	70
		3b	1540	1500	25	25	0	−3 −2 −1 0 1 2 3	0.5	0.5	70
		3c	1540	1580	25	25	0	−3 −2 −1 0 1 2 3	0.5	0.5	70
2	1	4a	1540	1540	50	10 20 30 40 50 60 70 80 90 100	−3	−3	0.5	0.5	100
		4b	1540	1500	50	10 20 30 40 50 60 70 80 90 100	−3	−3	0.5	0.5	100
		4b	1540	1580	50	10 20 30 40 50 60 70 80 90 100	−3	−3	0.5	0.5	100
	2	5a	1540	1540	50	10 20 30 40 50 60 70 80 90 100	−3	−3	0.5	0.5	–
		5b	1540	1540	50	10 20 30 40 50 60 70 80 90 100	−3	−3	0.5	0.3	100
		5c	1540	1540	50	10 20 30 40 50 60 70 80 90 100	−3	−3	0.5	0.7	100
		6a	1533	1533	5–40	5–40	264	264	0.58	0.58	45
						75–90		11		0.62
						125–150		2		0.72
		6b	1500	1533	5–40	5–40	264	264	0.58	0.58	15
						75–90		11		0.62
						125–150		2		0.72
		6c	1580	1533	5–40	5–40	264	264	0.58	0.58	15
						75–90		11		0.62
						125–150		2		0.72