Aim: To determine the time course of signal intensity changes and the apparent diffusion coefficient (ADC) abnormality on MR diffusion weighted imaging (DWI) after cerebral infarction.
目的：确定脑梗死磁共振弥散加权成像(DWI)信号改变和近似弥散系数(adc)的时间演变规律。
Objective: To find the relation between MR diffusion weighted imaging (MR-DWI) and severity of hepatic cirrhosis, and study the value of MR-DWI in evaluating the severity of hepatic cirrhosis.
目的：通过磁共振弥散加权成像(MR -DWI)与肝硬化程度的相关性研究，探讨其在评价肝硬化程度方面的价值。
Objective To compare the value of MR diffusion weighted imaging (DWI), perfusion weighted imaging (PWI), and CT perfusion imaging (CTPI) in evaluating a model of acute cerebral venous occlusion.
目的对比磁共振扩散加权成像（DWI）、灌注加权成像（PWI）和CT灌注成像（CTPI）评价急性脑静脉闭塞模型的价值。
Objective To evaluate MR diffusion- weighted imaging (DWI) in the diagnosis of cerebral infarction.
目的评价低场永磁型磁共振弥散加权成像（DWI）在脑梗塞诊断中的应用价值。
Objective To locate transient cerebral ischemic attack (TIA) within MCA territory with MR diffusion-weighted imaging(DWI)and MR angiography(MRA), and to evaluate the role of fMRI in clinic practising.
目的利用弥散加权成像（DWI）、磁共振血管成像（MRA）对大脑中动脉（MCA）区域TIA进行解剖性定位，评价磁共振对临床实践的指导意义。
MR diffusion-weighted imaging(DWI) reflects the microscopic Brownian motion of water molecules. It is a new technology for disease research from the cellular and molecular level.
磁共振弥散加权成像（DWI）反映了水分子的微观弥散运动，是从细胞及分子水平来进行疾病研究的新技术；
Purpose:To evaluate the value of low magnetic-field intensity MR diffusion-weighted imaging(DWI) incerebral ischemia in early stage.
目的：探讨低场强磁共振弥散成像对早期脑缺血的诊断价值。
Objective To study the features of MR diffusion-weighted imaging (DWI) in the hyperacute cerebral infarction.
目的研究超急性脑梗死的磁共振的弥散加权像(DWI)征象。
Objective To study the features of MR diffusion-weighted imaging (DWI) in the hyperacute cerebral infarction.
目的研究超急性脑梗死的磁共振的弥散加权像(DWI)征象。
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