《国际肝病》：您能简要的介绍一下弥散加权成像的机制吗？
Hepatology Digest : Could you please summarize the mechanism for diffusion weighted imaging?
磁共振弥散加权成像是急性缺血性脑卒中最敏感的诊断方法。
Diffusion-weighted imaging is the most sensitive diagnostic method for acute ischemic stroke.
目的：比较液体衰减反转恢复(FLAIR)序列和弥散加权成像(DWI)在急性脑梗塞中的应用。
Purpose: To compare fluid attenuated inversion recovery (FLAIR) sequence and diffusion weighted imaging (DWI) sequence in evaluation of acute cerebral infarction.
目的：评价弥散加权成像在诊断表皮样囊肿中的作用。
Objective: To evaluate the effect of diffusion-weighting imaging in diagnosis of epidermoid cyst.
磁共振弥散加权成像对脑缺血的检测非常敏感，是近年关注的研究热点之一。
Magnetic resonance diffusion weighted imaging (MR DWI) has been paid close attention recently for its sharp sensitivity of cerebral ischemia.
目的探讨弥散加权成像(DWI)在脑干梗塞中的应用价值。
Objective To discuss the application value of diffusion weighted image (DWI) in brainstem infarction.
目的探讨低场磁共振弥散加权成像（DWI）诊断急性脑梗死的价值。
Objective To investigate the diagnostic value of diffusion weighted imaging ( DWI) in acute cerebral infarction.
磁共振全身弥散加权成像是一种新的磁共振功能成像技术。
Whole body diffusion weighted imaging is a new technique of functional magnetic resonance imaging.
目的比较液体衰减翻转恢复（FL AIR）序列和弥散加权成像（DWI）序列在急性脑梗死中的应用。
Objective To compare fluid-attenuated inversion-recovery (FLAIR) sequence and diffusion-weighted imaging (DWI) sequence in evaluation of acute cerebral infarction.
目的：探讨弥散加权成像(DWI)和灌注加权成像(PWI)在超急性和急性缺血性脑卒中的应用价值。
Objective: To evaluate the clinical application of diffusion weight imaging (DWI) and perfusion weight imaging (PWI) in the super acute and acute ischemic stroke.
结论合理应用扫描技术，可实现颈髓弥散加权成像，对颈髓病变的早期诊断具有较高的临床应用价值。
Conclusion Reasonably using MR scanning techniques will realize the diffusion-weighted imaging of cervical spinal cord and helpful to diagnose early cervical spinal cord lesion.
目的评价磁共振弥散加权成像(DWI)表观弥散系数(adc)和ADC图对脑缺血的诊断价值。
Objective To evaluate the diagnostic value of (DWI) apparent diffusion coefficient (ADC) and ADC map in diagnosis of cerebral ischemia.
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；
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.
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 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。
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：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。
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.
目的评价磁共振弥散加权成像（DWI）和灌注加权成像（PWI）在急性脑缺血中的诊断价值。
Objective To evaluate diagnostic value of diffusion-weighted imaging (DWI) and perfusion-weighted imaging(PWI) in acute cerebral ischemia.
目的探讨磁共振弥散加权成像对脑转移瘤的诊断价值。
ObjectiveTo explore the value of DWI in the diagnosis of brain metastatic tumors.
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 evaluate MR diffusion- weighted imaging (DWI) in the diagnosis of cerebral infarction.
灌注和弥散加权磁共振成像在脑梗死超早期有着潜在的应用价值。
Perfusion - and diffusion-weighted MRI has potential application values in hyperacute cerebral infarction.
目的观察大鼠弥漫性轴索损伤（DAI）后弥散加权成像（DWI）的变化规律。
Objective To observe the changes of diffusion weighted imaging (DWI) after diffuse axonal injury (DAI) in rats.
摘要：目的通过与核素骨显像比较，探讨全身磁共振弥散加权成像(WB - DWI)探测骨转移瘤的可行性及临床价值。
ABSTRACT: Objective To evaluate the feasibility and clinical value of whole body diffusion weighted magnetic resonance imaging (WB-DWI) in detection of bone metastases.
结果磁共振弥散加权成像通过测量肝脏内的水分子弥散运动，从而了解肝脏局灶性和弥漫性病变与肝脏正常结构和功能的差异。
Results OWI could demonstrate the normal and abnormal structure and function through measuring the diffusion motions of water molecule in the liver.
结果磁共振弥散加权成像通过测量肝脏内的水分子弥散运动，从而了解肝脏局灶性和弥漫性病变与肝脏正常结构和功能的差异。
Results DWI could demonstrate the normal and abnormal structure and function through measuring the diffusion motions of water molecule in the liver.
所有的患者均接受了专门的卒中检查，包括弥散加权成像(DWI)以及临床特点和血管危险因素的详细评估。
All had undergone a dedicated stroke workup including diffusion-weighted imaging (DWI) and a detailed assessment of clinical features and of vascular risk factors.
目的：探讨正常人脑及脑梗塞弥散加权平面回波成像(DWEPI)的特点。
Objective: To evaluate the diffusion weighted echo planar imaging (DW EPI) features of brain in normal subjects and in patients with cerebral infarction.
重症急性酒精中毒死亡组大鼠脑的磁共振弥散加权成像均出现高强度信号，表观弥散系数值在短时间内骤降。
Abnormal high signal can also be seen on DWI image of severe alcoholism dead group, and ADC value showed a sudden drop in a short term.
结果未注酒精组大鼠脑的磁共振弥散加权成像未见异常信号改变，其表观弥散常数值亦未见随时间而改变。
Resultsthere were no abnormal signals on DWI image of non alcohol injection group, and ADC value didn't change at different point of time.
结论mr弥散加权成像对纵隔肿瘤的诊断及鉴别诊断有一定价值，可作为纵隔MRI检查的有益补充。
Conclusion Diffusion-weighted MR imaging is valuable for the diagnosis and differentiation of mediastinal tumors and it is a useful supplement for conventional MRI.
结论mr弥散加权成像对纵隔肿瘤的诊断及鉴别诊断有一定价值，可作为纵隔MRI检查的有益补充。
Conclusion Diffusion-weighted MR imaging is valuable for the diagnosis and differentiation of mediastinal tumors and it is a useful supplement for conventional MRI.
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