Ultrasonic contrast agent with polymeric gas or air filled micro

Drug – bio-affecting and body treating compositions – In vivo diagnosis or in vivo testing – Ultrasound contrast agent

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424 95, A61B 813

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active

058402756

ABSTRACT:
Ultrasonic contrast compositions containing gas or air filled microballoons having a mean size in the range of 0.5 to 1000 microns bounded by a 50 to 500 nm thick biodegradable, interfacially deposited, synthetic polymer membrane which is deformable and resilient in an aqueous carrier liquid are described.

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