申请人:——
公开号:US20040146462A1
公开(公告)日:2004-07-29
Ultrasonic visualisation of a subject, particularly of perfusion in the myocardium and other tissues, is performed using novel gas-containing contrast agent preparations which promote controllable and temporary growth of the gas phase in vivo following administration and can therefore act as deposited perfusion tracers. The preparations comprise an injectable aqueous medium comprising dispersed gas and an injectable oil-in-water emulsion in which the oil phase comprises a diffusible component capable of diffusion in vivo into the dispersed gas to promote temporary growth thereof, such that material present at the surfaces of the dispersed gas phase and material present at the surfaces of the dispersed oil phase have affinity for each other, e.g. as a result of having opposite charges. In cardiac perfusion imaging the preparations may advantageously be coadministered with vasodilator drugs such as adenosine in order to enhance the differences between return signal intensity from normal and hypoperfused myocardial tissue respectively.
使用新型含气对比剂制剂进行超声成像,特别是心肌和其他组织的灌注成像,这些制剂促进体内气相的可控、暂时性生长,因此可以作为沉积的灌注示踪剂。这些制剂包括可注射的水性介质,其中包含分散的气体和可注射的油水乳液,其中油相包含可扩散的成分,能够在体内扩散到分散的气体中促进其暂时性生长,使分散气体相和分散油相表面的物质互相吸引,例如由于具有相反的电荷。在心脏灌注成像中,这些制剂可以优势地与血管扩张药物(如腺苷)同时使用,以增强正常和低灌注心肌组织的回波信号强度差异。