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纳米包膜
相关语句
  nano-sized shell
     Investigations of instantaneous nonlinear characteristics of nano-sized shell contrast micorbubbles in ultrasonic field
     纳米包膜造影微泡在脉冲超声场中的瞬态非线性特性研究
短句来源
  “纳米包膜”译为未确定词的双语例句
     Detection of ultrasound contrast agent microbubble with constructed bubble wavelet
     纳米包膜造影微泡的小波检测技术研究
短句来源
     SURFACTANT-BASED NANO-SHELLED MICRO-BUBBLE ULTRASOUND CONTRAST AGENT
     基于表面活性剂的纳米包膜微泡超声造影剂
短句来源
     EVALUATION OF THE THICKNESS OF THE NANOMETER-SIZED ULTRASOUND CONTRAST AGENTS MICROBUBBLE SHELL USING A NOVEL ULTRA HIGH SPEED CAMERA COMBINED WITH ULTRASOUND BACKSCATTER
     基于超高速摄影显微成像和超声散射的纳米包膜造影微泡包膜厚度估计
短句来源
     Objective To study the effects of structural parameters on encapsulated microbubbles' subharmonic characterization and to optimize these parameters to prepare microbubbles suitable for subharmonic imaging.
     目的研究纳米包膜超声造影微泡的结构参数及声学参数对其次谐波特性的影响,并对其进行优化设计。
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  相似匹配句对
     Nano-foam plastics
     纳米泡沫塑料
短句来源
     Nanobiotechnology:Opportunities and Challenges
     纳米生物技术
短句来源
     Detection of ultrasound contrast agent microbubble with constructed bubble wavelet
     纳米包膜造影微泡的小波检测技术研究
短句来源
     rough capsuls on tumor;
     包膜粗糙;
短句来源
     The product′s coating even film is thick and its particle is of nanometer.
     所得产物包膜均匀、致密,颗粒达纳米级。
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A new intravenous micro bubble ultrasound contrast agent with three ester surfactants and other additives as its nano shelled materials was prepared by sonication. Some paramemters in the process such as the selection of ultrasound power and time, the effect of the buffer pH value on the micro bubble production, the adding style of the inner gas, the effect of different diluents on the micro bubble flowing state, were studied. The preservation styles and in vitro contrast imaging of the micro bubbles...

A new intravenous micro bubble ultrasound contrast agent with three ester surfactants and other additives as its nano shelled materials was prepared by sonication. Some paramemters in the process such as the selection of ultrasound power and time, the effect of the buffer pH value on the micro bubble production, the adding style of the inner gas, the effect of different diluents on the micro bubble flowing state, were studied. The preservation styles and in vitro contrast imaging of the micro bubbles were investigated. Six dogs were used to verify the in vivo contrast effect of the prepared micro bubble ultrasound contrast agent. The ultrasound contrast perfusion images of the dog's kidney were gived.

采用声空化的方法 ,以 3种酯类表面活性剂作为微泡的纳米包膜材料进行了静脉注射微泡超声造影剂的制备研究 ,实验研究了超声功率与超声时间的选择、磷酸盐缓冲溶液 pH值对微泡产量的影响、通气方式的选择、稀释液对微泡流动性的影响、振动对微泡的影响 ,研究了微泡的保存方式 ,并对制备出的微泡超声造影剂进行了体外及动物体内造影成像效果研究 ,给出了实验犬肾脏造影灌注的结果 .

Motivated by the need to measure the thickness of ultrasound contrast agent microbubble shell generally of nanometer scale,which is of great value in the structure analysis and mechanics parameters evaluation on microbubble, a novel ultra high speed digital camera capable of 100 million frames/s was used to capture the radial fluctuations of a bubble during insonation. By comparison of the predicted radial oscillations with those measured optically, the thickness of the shell can be evaluated in Root-Mean-Square...

Motivated by the need to measure the thickness of ultrasound contrast agent microbubble shell generally of nanometer scale,which is of great value in the structure analysis and mechanics parameters evaluation on microbubble, a novel ultra high speed digital camera capable of 100 million frames/s was used to capture the radial fluctuations of a bubble during insonation. By comparison of the predicted radial oscillations with those measured optically, the thickness of the shell can be evaluated in Root-Mean-Square sense. It is envisioned that the use of the new technique will expand to find its way in the target drug encapsulation and delivery as well as ultrasound contrast imaging methods.

纳米包膜微泡和携带药物的生物微系统在超声成像和药物传递与释放等方面具有重要的应用价值。通过使用时间分辨率最小可达10ns的新型超高速显微成像装置,得到微泡在医用频率超声场中的半径振动曲线,对参数做灵敏度分析后,与理论预测结果做最小均方误差对比,经反向参数估计,获得包膜厚度估计值。结果表明,该技术在不破坏样品的条件下,能得到较为准确的包膜参数。

Objective To study the effects of structural parameters on encapsulated microbubbles' subharmonic characterization and to optimize these parameters to prepare microbubbles suitable for subharmonic imaging. Method A theoretical model for the oscillation of encapsulated microbubbles in ultrasound field was employed to develop a computer aided design system which was used to analyze the effects of structure and acoustic parameters on subharmonic responses of the microbubbles. Microbubbles with different size distributions...

Objective To study the effects of structural parameters on encapsulated microbubbles' subharmonic characterization and to optimize these parameters to prepare microbubbles suitable for subharmonic imaging. Method A theoretical model for the oscillation of encapsulated microbubbles in ultrasound field was employed to develop a computer aided design system which was used to analyze the effects of structure and acoustic parameters on subharmonic responses of the microbubbles. Microbubbles with different size distributions were prepared by size fractioning, and their quantitative acoustic properties were measured in vitro. Result Theoretical simulation and acoustic measurement showed that subharmonic enhancement could be observed with microbubbles in vitro and numerically at the transmitted frequency of 5 MHz by controlling the size distribution. Larger microbubbles showed higher subharmonic enhancement than non-fractioned ones. Conclusion The subharmonic characterization of encapsulated microbubbles can be optimized by means of this computer aided design system. Thus desired microbubbles can be prepared with the aid of this system.

目的研究纳米包膜超声造影微泡的结构参数及声学参数对其次谐波特性的影响,并对其进行优化设计。据此制备适用于次谐波成像的超声造影微泡。方法基于包膜超声造影微泡的理论模型建立计算机辅助优化设计与分析系统,从理论上分析微泡的结构参数与声学参数等对微泡次谐波特性的影响。同时。对微泡进行分级分离得到不同尺寸分布的微泡,并对其体外声学特性进行测试。结果仿真计算和实验结果表明当微泡的膜材料一定时,通过控制微泡粒径的分布,在一定的声压条件下可得到较强的次谐波响应;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。结论利用基于模型的计算机辅助设计系统能够对微泡的次谐波特性进行优化设计,并对微泡的制备进行理论性指导。

 
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