Diagnostic and contrast agent

  • US 5,618,514 A
  • Filed: 12/22/1994
  • Issued: 04/08/1997
  • Est. Priority Date: 12/21/1983
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of contrast enhanced ultrasonic diagnostic imaging comprising:

  • administering to a subject a contrast enhancing amount of spheres or particles comprising a matrix enclosing a contrast agent which reflects sound waves, said matrix being a biocompatible, biodegradable, non-immunogenic non-polyamino acid synthetic polymer; and

    generating an ultrasonic image of said subject.

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