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. Author manuscript; available in PMC: 2011 Jul 20.
Published in final edited form as: Ther Deliv. 2010 Dec 1;1(6):819–848. doi: 10.4155/tde.10.66

Figure 6. Characteristics of ultrasound contrast agent preparations.

Figure 6

An example of microscopy of a preparation showing typical size distribution (scale bar: 10 μm). Size: microbubble (mean diameter 1–4 μm); nanoparticle (mean diameter <1 μm). Gas composition: air or nitrogen; sulfur hexafluoride; perfluorocarbons (C3F8, C4F10). Shell composition: lipid or other lipid-like surfacant; protein (albumin); biocompatible polymers.

Reproduced with permission from [54] © Elsevier.