Liposomes as contrast agents for ultrasonic imaging and methods for preparing the same
First Claim
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1. A contrast agent for ultrasonic imaging which comprises a liposome having encapsulated therein a photo-activated gaseous precursor.
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Abstract
Liposomes suitable as ultrasound contrast agents which contain media of various types including gases, gaseous precursors activated by pH, temperature or pressure, as well as other solid or liquid contrast enhancing agents, are described. Methods of using the same as ultrasound contrast agents are also disclosed. The present invention also comprises novel methods for synthesizing liposomes having encapsulated therein gases.
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14 Claims
- 1. A contrast agent for ultrasonic imaging which comprises a liposome having encapsulated therein a photo-activated gaseous precursor.
- 3. A contrast agent for ultrasonic imaging which comprises a liposome having encapsulated therein a temperature-activated gaseous precursor.
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