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Methods for making ultrasound contrast agents

  • US 10,220,104 B2
  • Filed: 03/29/2018
  • Issued: 03/05/2019
  • Est. Priority Date: 07/06/2016
  • Status: Active Grant
First Claim
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1. A method for preparing a phospholipid suspension useful for preparing an ultrasound contrast agent comprisingcombining DPPA, DPPC and MPEG5000-DPPE, in propylene glycol to form a phospholipid solution, the MPEG5000-DPPE selected as having a calcium concentration of less than 115 parts per million (ppm), wherein the phospholipid solution has a calcium concentration of less than 0.7 ppm, andcombining the phospholipid solution with an aqueous solution to form a phospholipid suspension.

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