Long-lasting aqueous dispersions or suspensions of pressure-resistant gas-filled microvesicles and methods for the preparation thereof
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United States of America Patent
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Jul 1, 2003
Issued Date -
N/A
app pub date -
Oct 31, 1996
filing date -
Apr 2, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
One can impart outstanding resistance against collapse under pressure to gas-filled microvesicle used as contrast agents in ultrasonic echography by using as fillers gases whose solubility in water, expressed in liter of gas by liter of water under standard conditions, divided by the square root of the molecular weight does not exceed 0.003.
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