. Author manuscript; available in PMC: 2013 Dec 2.

Published in final edited form as: Ultrasound Med Biol. 2008 Apr 16;34(9):10.1016/j.ultrasmedbio.2008.02.007. doi: 10.1016/j.ultrasmedbio.2008.02.007

Table 2.

Correlation matrix for time-dependent quantities over all measured epochs (N = 6179 for the 18 experiments). Correlation coefficients in bold type are statistically significant (p < 10⁻²⁵ in all cases).

Subharmonic	Broadband	Low-frequency	Grayscale
−6.47 · 10⁻⁴	0.419	0.527	0.455	Temperature
	1.02 · 10⁻⁴	3.54 · 10⁻³	0.123	Subharmonic
		0.651	2.32 · 10⁻³	Broadband
			0.218	Low-frequency