Ultrasound degradation of novel polymer contrast agents
نویسندگان
چکیده
منابع مشابه
Excitation of polymer-shelled contrast agents with high-frequency ultrasound.
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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Phospholipid-coated ultrasound contrast agents may deflate or even collapse because of stress resulting from ultrasound-induced oscillations. In this work we investigate the behavior of isolated contrast agent microbubbles during prolonged ultrasound excitation. Isolated microbubbles placed in a thin capillary tube were excited with hundreds of ultrasound pulses at a low mechanical index, and t...
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ژورنال
عنوان ژورنال: Journal of Biomedical Materials Research
سال: 2003
ISSN: 0021-9304,1097-4636
DOI: 10.1002/jbm.a.20032