Contrast agents
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Abstract
Contrast agents comprising microbubble-generating carbohydrate microparticles having a surfactant admixed within the microparticulate structure, with the proviso that the surfactant is not a C10-20 fatty acid, are disclosed. Processes for preparing contrast agents also are disclosed.
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Citations
28 Claims
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1-13. -13. (canceled)
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14. The method of generating an enhanced echocardiographic image of a human or non-human body comprising:
- administering into the pulmonary system of said body an echocardiographic contrast enhancing amount of a contrast agent comprising gasmicrobubble-generating aggregates of microparticles;
applying to a part of said body ultrasound at a frequency of 0.1 to 15 MHZ; and
generating said image;
said microparticles comprising a water soluble matrix material and a surfactant, the microbubbles generated by said aggregates comprising SF6 or a fluorinated low molecular weight hydrocarbon, said aggregates being 20-125 Φ
m in size and said microparticles having an average size of 0.1 to 50 Φ
m. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
- administering into the pulmonary system of said body an echocardiographic contrast enhancing amount of a contrast agent comprising gasmicrobubble-generating aggregates of microparticles;
Specification