Table 1:

Parameter values for the initial pressure, sound speed, and mass density distributions for each tissue type. The normalized initial pressure values are roughly based on the relative concentration of blood for each tissue type [48, 33, 28, 18].

Index	Region	Initial pressure	Sound speed [mm/μs]	Mass density [mg/mm3]
0	Water	0.0	1.480	1.00
1	Bulk tissue	0.3	1.540	1.00
2	Bone	0.1	3.198	1.99
3	Kidney	0.9	1.560	1.00
4	Liver	1.0	1.578	1.00
5	Pancreas	0.3	1.591	1.00
6	Spleen	0.5	1.567	1.00