Method of preparing gas-filled microspheres using a lyophilized

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

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424 951, 424450, 12866202, A61K 4904, A61B 813

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active

057764298

ABSTRACT:
Lyophilized lipid compositions, as well as methods for their preparation, are embodied by the present invention. Gas-filled microspheres prepared using the lyophilized lipid composition are particularly useful, for example, in ultrasonic imaging applications and in therapeutic drug delivery systems.

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