目的探讨SENSE技术支持下磁共振扩散成像adc值在诊断肝硬化和肝癌中的应用价值。
Objective to evaluate the diagnostic value of apparent diffusion coefficient (ADC) values in liver cirrhosis and hepatocellular carcinoma by using SENSE technique.
目的对在线扫描扩散成像法下由患者运动和磁场不均匀引起的MR图像运动缺失现象进行修正和补偿。
Objective Correct MR line scan diffusion image with motion missing caused by patients motion and asymmetric magnetic field.
汤普森利用扩散方法成像，他控制水通过白质扩散的方向，显示大脑连接的速度。
Thompson used diffusion imaging, which measures the direction in which water diffuses through white matter, to show the speed of the connections.
信号处理、成像、医学成像、地质学、生物信息学、编码理论、信息论、控制系统……它几乎已经扩散到每一个工程学科与领域。
Signal processing, imaging, medical imaging, geology, bioinformatics, coding theory, information theory, control systems... It has been disseminated to almost every engineering field.
目前更为简单廉价的技术，通过给动物注射可以扩散进入血液系统的荧光染剂，实现内部器官成像。
A cheaper and simpler technique involves injecting the animals with fluorescent dyes that are diffused into the blood stream and channeled to the internal organs.
研究人员观察了大脑连接的控制语言和社会行为的两个区域，他们使用一种名为扩散张量成像的技术。
The researchers looked at the connections in two areas of the brain that control language and social behavior. They used a technique called diffusion tensor imaging.
目的：评价磁共振扩散加权成像在肝占位性病变中的诊断及鉴别诊断的价值及意义。
Objective: To evaluate the value of diffusion weighted magnetic resonance imaging in diagnosis and differentiation of focal liver masses.
目的用磁共振扩散张量成像(dti)观察犬急性脊髓损伤后可降解支架及神经干细胞移植的作用。
Objective Using MR diffusion tensor imaging (DTI) to observe the effect of transplantation of degradable scaffold seeded with neural stem cells to acutely injured canine spinal cord.
目的应用MR扩散张量成像对脑室周围白质软化症(pvl)患儿和正常婴幼儿进行比较。
Objective To compare pediatric patients with periventricular leukomalacia (PVL) with normal children by using diffusion tensor MR imaging.
他们利用扩散张量成像技术来观察脑部微纤维以检查大脑回路是否组织良好。
They used a technique called diffusion tensor imaging. This way they could observe microscopic fibers to see how well the brain circuitry was organized.
将二维点扩散函数(PSF)和蒙特卡罗方法相结合，引入了一种研究混浊介质显微成像的快速仿真模型。
A rapid and accurate model used to study microscopic imaging through turbid medium is presented which combines traditional Monte Carlo with two dimensional point spread function (PSF).
目的扩散张量成像技术探讨失写症脑内神经纤维改变的特征。
Objective To exhibit the fibers of cheirokinesthetic center, and to demonstrate fiber changes of agraphia with diffusion tensor imaging and fiber tracking technique.
目的探讨扩散加权成像在肝包虫病中的应用价值。
Objective To evaluate the application of diffusion-weighted MR imaging in hepatic echinococcosis.
目的研究肌萎缩侧索硬化症(ALS)患者非锥体束区域磁共振扩散张量成像(dti)的特点。
Objective Investigate MR resonance diffusion tensor im-aging (DTI) characteristics of non-pyramid tracts in the patients with amyotrophic lateral sclerosis (ALS).
目的探讨急性脑实质内出血的磁共振扩散加权成像（DWI）表现及其发生机制。
Objective To investigate the manifestations and mechanism of acute intracerebral hemorrhage on diffusion-weighted MR imaging(DWI).
定量地分析不同年龄段正常脑白质磁共振扩散加权成像ADC值，建立正常脑白质及灰质ADC值标准，为评价放射性脑损伤提供参考值。
To quantitatively study the ADC values of normal white matter with advancing age on diffusion and establish reference values of ADC for further studies of radiation-induced injury.
本文首先研究了扩散方程作为光学层析成像问题的正向模型的精确性及其适用条件。
In this thesis, the accuracy and the validity conditions of the diffusion equation as a forward model for the optical tomography was firstly studied.
在分析相干光照明下无衍射成像系统理论的基础上，设计了无衍射光成像系统的点扩散函数的测量系统。
Based on the theories of non-diffracting imaging system in coherent light, the measurement system of point spread function (PSF) of non-diffracting imaging system has been presented.
磁共振扩散加权与弥散张量成像作为磁共振成像新技术已经应用于临床。
As new technologies of magnetic resonance imaging, diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI) have been applied in clinical diagnosis.
目的探讨磁共振扩散加权成像（DWI）和灌注加权成像（PWI）对早期脑梗死缺血半暗带（IP）的诊断价值。
Objective To explore the value of diffusion weighed imaging (DWI) and perfusion weighted imaging (PWI) in the diagnosis of the ischemic penumbra (IP) of superacute infarction.
为研究蛋白质晶体的生长机理，采用气相扩散法制备溶菌酶晶体，使用原子力显微成像技术观测了溶菌酶晶体（101）生长面的形貌。
In order to study the growth mechanism of protein crystals, the surface morphology of(101) face of lysozyme crystals obtained by gas diffusion method was observed by AFM imaging.
大多数重建算法假设成像系统的模糊特性也即点扩散函数(PSF)已知，然而实际的应用环境下P SF事先不知道或部分知道。
Many image SRR algorithms assume that the blurring process, i. e., point spread function (PSF) of the imaging system is known prior to reconstruction.
通过分析点扩散函数、斯特列比和离焦量的关系来评价三种不同掩模板对光学系统成像质量的影响。
Point spread function (PSF) and Strehl ratio (SR) are used to evaluate the imaging quality of the system with different defocus parameters.
为了提高超声成像系统的分辨率，研制了用于检测双金属转子复合层扩散焊连接质量的超声换能器。
To enhance resolution of Ultrasonic Image System, an ultrasonic transducer used for testing bimetal clad layer was developed.
目的：探讨扩散加权磁共振成像在急性脑梗死诊断中的价值。
Objective: To evaluate the value of diffusion-weighted magnetic resonance imaging (MRI-DWI) in diagnosing acute cerebral-infarction.
目的探讨SENSE基础上扩散加权成像在诊断肝占位性病变中的应用价值以及表面扩散系数（ADC）评估肝占位病变的价值。
Objective:To evaluate the value of diffusion-weighted imaging based on SENSE technology and apparent diffusion coefficient (ADC) in diagnosis of hepatic masses.
在叠加成像方面，CRS叠加、非线性扩散滤波等可直接用来提高地震成像质量。
As for stack imaging, CRS stack and nonlinear diffusion filtering have been used to enhance the effects of seismic imaging in various seismic processing steps.
在叠加成像方面，CRS叠加、非线性扩散滤波等可直接用来提高地震成像质量。
As for stack imaging, CRS stack and nonlinear diffusion filtering have been used to enhance the effects of seismic imaging in various seismic processing steps.
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