超声微泡造影剂经静脉注射到靶组织后 ,在超声能量作用下发生空化作用 ,能有效穿透血管内膜屏障 ,定向释放内部包裹的基因和药物 ,使局部浓度大大增高 ,达到靶向治疗的目的。脂质微泡因其壳的特性可以在其表面装配不同的配体 ,因而比白蛋白微泡有更高的传输效率。微泡可能成为靶向治疗的载体 ,但这种技术仍需做更多进一步的研究。 Ultrasound microbubble contrast agent after intravenous injection to the target tissue, under the action of ultrasound energy cavitation effect, can effectively penetrate the vascular intima-membrane barrier, the directional release of the internal wrapped genes and drugs, the local concentration was greatly increased, to achieve the target The purpose of treatment. Lipid microbubbles can be assembled with different ligands on the surface due to their shell properties, so they have higher transfer efficiency than albumin microbubbles. Microbubbles may become the carrier of targeted therapy, but this technique still needs further study.