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. Author manuscript; available in PMC: 2014 Jan 13.
Published in final edited form as: Ultrasonics. 2012 Mar 29;52(7):962–969. doi: 10.1016/j.ultras.2012.03.007

Figure 3.

Figure 3

Figure 3

Figure 3

Figure 3

Frequency dependent attenuation coefficient of echogenic liposomes measured with four different transducers (2.25, 3.5, 5, 10 MHz) and plotted within their respective −6 dB bandwidth for lipid concentrations of (a) 3.33µg/ml (b) 6.67 µg/ml and (c) 10µg/ml. Data averaged for 5 different samples, (d) Attenuation coefficient at the central frequencies of the four transducers as a function of lipid concentration.