申请人:Bracco International BV
公开号:US20010001279A1
公开(公告)日:2001-05-17
Disclosed are injectable suspensions of gas filled microbubbles in an aqueous carrier liquid usable as contrast agents in ultrasonic echography. The suspensions comprise amphipathic compounds of which at least one may be a laminarized phospholipid as a stabilizer of the microbubbles against collapse with time and pressure. The concentration of phospholipids in the carrier liquid is below 0.01% wt but is at least equal to or above that at which phospholipid molecules are present solely at the gas microbubble-liquid interface. Also disclosed is a method of preparation of the stable suspensions of air or gas filled microbubbles.
本发明公开了在水性载液中可用作超声波回波成像造影剂的充气微泡可注射悬浮液。悬浮液中含有两性化合物,其中至少一种可以是层状磷脂,作为微气泡的稳定剂,防止微气泡随时间和压力而崩溃。载液中磷脂的浓度低于 0.01% wt,但至少等于或高于磷脂分子仅存在于气体微泡-液体界面的浓度。此外,还公开了一种制备充满空气或气体的微气泡稳定悬浮液的方法。