Maxwell rheological model for lipid-shelled ultrasound microbubble contrast agents
نویسندگان
چکیده
منابع مشابه
Nonlinear dynamics of lipid-shelled ultrasound microbubble contrast agents
Encapsulated gas microbubbles, known as contrast agents, are widely used in ultrasound medical applications. The present study is devoted to modelling of the spatio-temporal dynamics of lipid-shelled contrast agents. A theoretical model is proposed that describes the radial and translational motion of a lipid-shelled microbubble in an ultrasound field. The model approximates the behaviour of th...
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The superior scattering properties of gas bubbles compared with blood cells have made microbubble ultrasound contrast agents important tools in ultrasound diagnosis. Over the past 2 years they have become the focus of a wide and rapidly expanding field of research, with their benefits being repeatedly demonstrated, both in ultrasound image enhancement, and more recently in drug and gene deliver...
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Few experimental and complementary theoretical studies have investigated high-frequency (>20 MHz) nonlinear responses from polymer-shelled ultrasound contrast agents. Three polymer agents with different shell properties were examined for their single-bubble backscatter when excited with a 40 MHz tone burst. Higher-order harmonic responses were observed for the three agents; however, their occur...
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An investigation into the effect of clinical ultrasound exposure on adherent microbubbles is described. A flow phantom was constructed in which targeted microbubbles were attached using biotin-streptavidin linkages. Microbubbles were insonated by broadband imaging pulses (centred at 2.25 MHz) over a range of pressures (peak negative pressure (PNP) = 60-375 kPa). Individual adherent bubbles were...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2007
ISSN: 0001-4966
DOI: 10.1121/1.2722233