LONG LASTING AQUEOUS DISPERSIONS OR SUSPENSIONS OF PRESSURE-RESISTANT GAS-FILLED MICROVESICLES AND METHODS FOR THE PREPARATION THEREOF

摘要

ABSTRACTOne can impart outstanding resistance against collapse underpressure to gas-filled microvesicle used as contrast agents in ultrasonicechography by using as fillers gases whose solubility in water, expressedin liter of gas by liter of water under standard conditions, divided by thesquare root of the molecular weight does not exceed 0.003.