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- postcavitation microbubbles 空化后微气泡
- The progress in preparation methods of microbubbles speeds up along with the introduction of microcapsule techniques. 微胶囊技术的引入大大加快了微泡造影剂制备方法的发展。
- Larger microbubbles showed higher subharmonic enhancement than non-fractioned ones. 通过分级分离除去较小微泡后所得的次谐波响应比未分离前显著增强。
- From the present study, the preparation of UCA includes two directions, gases inside the microbubbles and material outside the microbubbles. 就目前的研究情况来看,UCA的制备主要包括以下两个研究方向:(一)微泡内气体成分的选择:(二)微泡的外包裹材料的选择。
- Recently,promising studies indicate that ultrasound in presence of microbubbles can disrupt the BBB efficaciously,and the new advances of this ... 近期研究显示,微泡介导下超声能有效开放血脑屏障,本文就这一新技术的研究进展作一综述。
- Based on the relevant materials, the advances in the application of the echogenic gas-filled microbubbles intherapy and delivery system were reviewed. 根据国外声振含气微泡最新研究进展,综述了声振含气微泡在治疗方面和作为药物或基因的递送系统方面的应用。
- Purpose: To study left ventricular and myocardial opacification by intravenous injection of hand agitated perflurocarbon microbubbles. 目的:探讨静注手振氟碳微泡造影剂左室腔及心肌显影的能力。
- The immunofluorescent experiment showed that the targeted microbubbles could be combined with vascular endothelial cells specifically. 免疫荧光实验结果显示靶向造影剂能在体外与血管内皮细胞特异性结合。
- Lipid-coated microbubbles may carry Taxol to C6 glioma cells, and the compound may act an killing effect in vitro. The mechanisms of metabolism associated with acidic component. 脂膜微囊可以承载紫杉醇在体外起到杀伤胶质瘤细胞的作用,且脂膜微囊的代谢与细胞内的酸性成分有关。
- Microbubbles destroyed by ultrasound with a frequency of 43 kHz and intensity of 1.2W/cm2 could induce BBB opening in rats, with minimal damage to brain tissue. 采用频率43kHz、声强1.;2W/cm2的超声波破坏微泡造影剂,可以使血脑屏障开放,同时对脑组织的损伤最轻。
- With this flash-replenishment technique, high-power flash pulses destroy the contrast microbubbles while low-power pulses demonstrate replenishment, Halpern said. 采用造影剂闪烁-再灌注技术,高能闪烁脉冲破坏对比剂微泡而低能脉冲显示出再灌注。
- MFI may be of help in this setting. With this flash-replenishment technique, high-power flash pulses destroy the contrast microbubbles while low-power pulses demonstrate replenishment, Halpern said. MFI可能会改进这一状况。采用造影剂闪烁-再灌注技术,高能闪烁脉冲破坏对比剂微泡而低能脉冲显示出再灌注。
- Objective and Methods:To assess the efficacy of contrst enhanced color Doppler power image for 15 patients with adnexal masses by intravenous injection of hand agitated 50% glucose perflurocarbon microbubbles. 目的与方法:采用经外周静脉注射手振50%25 葡萄糖氟碳微泡能量多普勒增强造影检查了15 例附件肿块患者, 以探讨本造影剂多普勒增强效果及其在附件肿块诊断中的应用价值。
- Purpose: The purpose of this study is to prepare prothrombin complex concentrate(PCC) conjugated anionic lipid microbubbles and to assess the physiochemical properties of the microbubbles. 目的:制备结合凝血酶原复合物(PCC)的阴离子脂膜微泡,评价微泡的理化性质。
- The mechanism of separation by floatation and some relative processes such as coag ulation and flocculation of colloid,adsorption with the microbubbles,and the floating of the mixture,were introduced. 介绍了气浮分离及其相关过程的机理,包括被分离杂质的主要成分胶体的凝聚、絮凝,与微气泡的粘附,粘附后混合体的浮升等。
- Conclusions Ultrasound-mediated intratumoral injection of microbubbles and destruction could enhance the permeability of tumor cell membrane and could cause coagulated necrosis areas in the tumors. 结论瘤内注射超声微泡联合超声辐照可增加细胞膜通透性并引起部分瘤细胞坏死。
- Then based on the prescription of JD95, we manufacture microbubbles with different proportions of Span-60 and Tween-80, and research the corresponding subharmonic effect in the acoustic field. 在JD95型超声造影剂配方的基础上,分别制备了不同的Span-60及Tween-80配比的超声造影剂,研究了这些造影剂在声场下的次谐波响应。
- Based on theoretical analysis, microbubble drag reduction is due to structure change of turbulent boundary layer caused by the microbubbles. 理论分析提出微气泡降阻机理在于其引起湍流边界层结构的变化;
- Results The obtained microbubble UCA exhibited a narrow size distribution.The polyelectrolytes were successfully assembled onto the surface of ST68-PFC microbubbles. 结果 声空化法能够制备出粒径分布均匀的超声造影剂微泡, 聚电解质有效地组装到ST68-PFC微泡表面。
- Conclusions Ultrasound-mediated microbubble destruction could enhance the permeability of myocardial cell membrane.This might be one mechanism for gene delivery with microbubbles. 结论超声破坏微泡可提高心肌细胞膜通透性,可能是超声微泡造影剂增强组织中基因转染的机制之一。