Table 1.

Values of the average attenuations $\overline{{\alpha }_{\mathrm{SC}}}$ of skin-mimicking phantoms expressed in dB∕cm MHz and corresponding attenuation coefficients $\overline{{\alpha }_{\mathrm{SC}}}{e}_{\mathrm{SC}}$ expressed in dB∕MHz for the Couette and tube experiments.

Sigmacell (SC) concentration (%)	Attenuation$\overline{{\alpha }_{\mathrm{SC}}}$ (dB∕cm∕MHz)	Attenuation coefficient for the Couette flow device$\overline{{\alpha }_{\mathrm{SC}}}{e}_{\mathrm{SC}}$ (eSC=1.3 cm) (dB∕MHz)	Attenuation coefficient for the tube flow device$\overline{{\alpha }_{\mathrm{SC}}}{e}_{\mathrm{SC}}$ (eSC=0.45 cm) (dB∕MHz)
0	0.0054±0.0015	0.0070±0.0019	0.0024±0.0006
0.25	0.088±0.018	0.115±0.024	⋯
0.5	0.168±0.023	0.219±0.030	⋯
0.75	0.246±0.027	0.320±0.035	⋯
1	0.316±0.031	0.411±0.040	0.142±0.014
1.5	0.475±0.053	⋯	0.214±0.024
2	0.633±0.051	⋯	0.285±0.023
2.5	0.768±0.060	⋯	0.346±0.027