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微血管灌注
相关语句
  microvascular perfusion
    Modeling of Microvascular Perfusion Based on Ultrasonic Contrast Agent and Preliminary Studies of Perfusion Parameters.
    超声造影剂微血管灌注建模及灌注参数初步研究
短句来源
    Objective To establish a theoretical model of microvascular perfusion based on ultrasound contrast agent(UCA) and to study the perfusion system response under different infusion conditions with the proposed model.
    目的建立基于超声造影剂(uItrasound contrast agent,UCA)的微血管灌注理论模型,研究各种不同灌注条件下系统的响应以及基于模型的灌注检测和灌注参数估计方法。
短句来源
  microvessel perfusion
    A Method for Detecting Microvessel Perfusion Based on Ultrasound Contrast Agent
    一种基于超声造影剂的微血管灌注检测方法
短句来源
  microvascular perfusion
    Modeling of Microvascular Perfusion Based on Ultrasonic Contrast Agent and Preliminary Studies of Perfusion Parameters.
    超声造影剂微血管灌注建模及灌注参数初步研究
短句来源
    Objective To establish a theoretical model of microvascular perfusion based on ultrasound contrast agent(UCA) and to study the perfusion system response under different infusion conditions with the proposed model.
    目的建立基于超声造影剂(uItrasound contrast agent,UCA)的微血管灌注理论模型,研究各种不同灌注条件下系统的响应以及基于模型的灌注检测和灌注参数估计方法。
短句来源
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  microvascular perfusion
Within irreversibly injured (infarcted) regions microvascular perfusion can vary from nearly normal to nearly zero, even in the presence of an open infarct-related artery ('no-reflow').
      
Historically, non-invasive assessment of heterogeneous microvascular perfusion within myocardial infarcts has been problematic.
      
The new frontiers of CMR in heart failure hold the promise of unique insights quantifying myocardial iron, nonischemic fibrosis, microvascular perfusion, plaque characterization, and CMR-targeted intervention.
      
Both theno-reflow phenomenon and the events initiated by reflow - termed herein as thereflow-paradox - contribute to the failure of the nutritive microvascular perfusion and loss of tissue viability following ischemia and reperfusion.
      
We studied in vivo the effect of cyclosporine A (CsA) on both pancreatic islet vascularization and microvascular perfusion using intravital fluorescence microscopy and the dorsal skinfold chamber model in Syrian golden hamsters.
      
更多          
  microvascular perfusion
Within irreversibly injured (infarcted) regions microvascular perfusion can vary from nearly normal to nearly zero, even in the presence of an open infarct-related artery ('no-reflow').
      
Historically, non-invasive assessment of heterogeneous microvascular perfusion within myocardial infarcts has been problematic.
      
The new frontiers of CMR in heart failure hold the promise of unique insights quantifying myocardial iron, nonischemic fibrosis, microvascular perfusion, plaque characterization, and CMR-targeted intervention.
      
Both theno-reflow phenomenon and the events initiated by reflow - termed herein as thereflow-paradox - contribute to the failure of the nutritive microvascular perfusion and loss of tissue viability following ischemia and reperfusion.
      
We studied in vivo the effect of cyclosporine A (CsA) on both pancreatic islet vascularization and microvascular perfusion using intravital fluorescence microscopy and the dorsal skinfold chamber model in Syrian golden hamsters.
      
更多          


To observe the myocardial microvascular per fusion after coronary flow restore from total obstruc-tion, three open-chest dbgs underwent intravenous MCE combined with intraaortic Ach injection beforeLAD obstruction and immediate, 15, 30, 60, 90 minutes after re-opening of LAD from 30 minute total ob-struction. The result showed that myocardial microvascular perfusion restored until 90 minutes after LADre-opening in all 3 dogs- This study suggested that myocardial microvascular injury may be the direct causeof...

To observe the myocardial microvascular per fusion after coronary flow restore from total obstruc-tion, three open-chest dbgs underwent intravenous MCE combined with intraaortic Ach injection beforeLAD obstruction and immediate, 15, 30, 60, 90 minutes after re-opening of LAD from 30 minute total ob-struction. The result showed that myocardial microvascular perfusion restored until 90 minutes after LADre-opening in all 3 dogs- This study suggested that myocardial microvascular injury may be the direct causeof myocardium stunning and MCE is a very good technique to study this phenomenon.

为探讨急性心肌缺血再灌注后心肌微血管状态,观察了三条开胸犬前降支(LAD)阻断前后,心肌声学造影显示的心肌微血管对Ach反应情况、结果表明:LAD阻断30min再开放后,心肌微血管灌注于血流重建后90min才恢复。说明心肌微血管内皮损伤是心肌顿抑的原因之一

A new technique for microvessel perfusion detection is proposed that employs the decorrelation property of ultrasound contrast agent.To evaluate this method,we performed experiments on flow mimic phantom and capillary phantom systems.The experimental data were processed with four different DCR decorrelation algsorithms,comparison of which was performed.An optimal algorithm was chosen for perfusion image construction on a blow mimic and capillary flow phantom,respectively.The two-dimension DCR images of phantoms...

A new technique for microvessel perfusion detection is proposed that employs the decorrelation property of ultrasound contrast agent.To evaluate this method,we performed experiments on flow mimic phantom and capillary phantom systems.The experimental data were processed with four different DCR decorrelation algsorithms,comparison of which was performed.An optimal algorithm was chosen for perfusion image construction on a blow mimic and capillary flow phantom,respectively.The two-dimension DCR images of phantoms were compared with B mode images.The factors that impact DCR detection were discussed in different aspects.The result show that the DCR method can detect and imaging the areas of phantom containing contrast microbubbles effectively.

提出一种利用超声造影剂回波解相关(DCR)特性的微血管灌注检测方法,介绍了该方法的原理和采用的算法,构建血流仿体和微血管仿体实验系统用于方法的讨论和评价;在仿体实验数据的基础上,对4种DCR检测算法进行了分析和比较,并根据各种实验条件下获得的DCR检测图像,进行了DCR方法与B模式成像结果的对比,同时讨论了各种影响DCR检测效果的因素;结果表明DCR方法可以有效检测包含造影剂的微血管区域并获得清晰图像.

Objective To establish a theoretical model of microvascular perfusion based on ultrasound contrast agent(UCA) and to study the perfusion system response under different infusion conditions with the proposed model. Method The relationship between perfusion parameter and UCA bubble concentration in imaging plane was described by stochastic differential equation. The transfer function and impulse response of perfusion system were analyzed. The perfusion model was compared with system model. Result Simulation results...

Objective To establish a theoretical model of microvascular perfusion based on ultrasound contrast agent(UCA) and to study the perfusion system response under different infusion conditions with the proposed model. Method The relationship between perfusion parameter and UCA bubble concentration in imaging plane was described by stochastic differential equation. The transfer function and impulse response of perfusion system were analyzed. The perfusion model was compared with system model. Result Simulation results of system concentration responses under different perfusion conditions were given. The results of time-intensity curves on blow mimic phantom experiment at one infusion mode were demonstrated. Conclusion With the proposed model, perfusion simulations under various complex perfusion conditions are performed for the first time. Preliminary studies of UCA based perfusion detection and perfusion parameter estimations are made.

目的建立基于超声造影剂(uItrasound contrast agent,UCA)的微血管灌注理论模型,研究各种不同灌注条件下系统的响应以及基于模型的灌注检测和灌注参数估计方法。方法用随机微分方程的形式描述成像平面区域内UCA微泡浓度与灌注参数之间的关系;从系统模型的角度来对所建立的模型进行分析和比对,确立系统的传输函数和冲激响应。结果给出了不同造影剂注射方式下,以及不同系统设置下UCA微泡浓度响应;在微血管仿体模型实验中,获得一种灌注条件下的灌注检测图像和两组时间一强度关系曲线。结论基于灌注模型的建立,首次实现了各种复杂条件下灌注系统的仿真,并对超声造影剂灌注检测和参数估计等难点问题进行了初步研究。

 
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