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Gaseous precursor filled microspheres as magnetic resonance imaging contrast agents

  • US 5,922,304 A
  • Filed: 03/09/1995
  • Issued: 07/13/1999
  • Est. Priority Date: 12/22/1989
  • Status: Expired due to Term
First Claim
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1. A method of providing an image of an internal region of a patient comprising (i) administering to the patient a gaseous precursor filled microsphere, wherein said microsphere contains substantially no sulfide linkages and consists essentially of one or more lipids, one or more lipids bearing polymers, or combinations thereof, (ii) allowing the gaseous precursor to undergo a phase transition from a liquid to a gas in the patient, and (iii) scanning the patient using magnetic resonance imaging to obtain visible images of said region.

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