Table 2.

In vivo pressure estimations based on a simple tissue attenuation model.

Estimated In Vivo Imaging Pressures
State	Max PNP Axial Location (cm)	Maximum PNP Value (MPa)	Mechanical Index
B-mode	0.50	0.27	0.09
Pulse Inversion	0.50	0.43	0.14
Estimated In Vivo Activation Pressures
Description	Axial Location (cm)	PNP Value (MPa)	Mechanical Index
Start of Kidney	0.30	3.70	1.65
Maximum PNP	0.85	4.50	2.01
End of Kidney	1.00	4.20	1.89
End of Activation ROI	1.20	3.80	1.70