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Figure 6 Representative myocardial contrast enhancement images and time versus VI data from the anterior myocardium of one dog acquired >10 min after intravenous injections of lipid microbubbles with a net negative charge without polyetheleneglycol (MBnegPEG–) (solid circles) and lipid microbubbles with a net neutral charge with polyetheleneglycol (MBneutPEG+) (open circles). Data are shown before and after a brief high-power ultrasound sequence (HPS).
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