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DWI and PWI were widely used in diagnosis , differentiating , and evaluating the prognosis of liver neoplasm and diffuse lesions .

目前，弥散成像和灌注成像已广泛应用于肝脏肿瘤和弥漫性疾病的诊断、鉴别诊断和治疗后疗效评价。

The Clinical Application of DWI and PWI in The Super-acute and Acute Ischemic Stroke

磁共振弥散加权和灌注加权成像在超急性和急性缺血性脑卒中的临床应用价值

Study of PWI to the before and after TACE of Primary Hepatic Carcinoma

原发性肝癌TACE前后磁共振灌注成像的研究

PWI was a effective method in studying the changes of blood flow perfusion after intracerebral hemorrhage .

PWI是客观研究和评价脑出血后脑组织血流动力学变化的有效手段。

The Experimental Study of DWI and PWI in Treating Acute Cerebral Ischemia with Tetramethylpyrazine

DWI及PWI对川芎嗪治疗急性脑缺血疗效监测的实验研究

DWI combined with PWI Can detect the IP and its extent .

DWI与PWI相结合能判断脑梗死半暗带的存在与否及其范围。

PWI can obtained from the bolus contrast approach .

PWI通过静脉团注造影剂而得到。

Objective : To study the effect of diagnosis and treatment of MRS and PWI technology in hyper acute cerebral infarction .

目的：探讨MRS和PWI技术对超急性脑梗死诊断和治疗中的作用。

Objective : 1 To evaluate the value of MR PWI in preoperative grading of cerebral gliomas .

1探讨MRPWI在术前评估脑胶质瘤组织病理学分级中的价值。

Conclusion PWI can provide quantitative information of the cerebral hemodynamics with symptom provocation in patients with OCD .

结论PWI能定量分析OCD症状诱发前后脑血流动力学改变。

MR and PWI examination were performed by 1.5 T GE Signa MR scanner .

采用1.5TGESignaMR扫描仪进行常规扫描和灌注扫描。

Conclusion : DWI and PWI can objectively evaluate the modified model of MCAO and reperfusion in rat .

结论：DWI和PWI可客观评价改良线栓法大鼠MCAO及再灌注模型效果。

Objective To evaluate the effect of surgical treatment in ischemic cerebrovascular disease using perfusion-weighted magnetic resonance imaging ( PWI ) technique .

目的探讨灌注磁共振成像（PWI）在缺血性脑血管病外科治疗中的作用。

Evaluate the comparative imaging among MR PWI , CT , MRI and PET in patients with radiation injury following radiotherapy for NPC .

探讨MRPWI与常规MRI、CT、PET对放射性脑损伤的比较影像学。

This paper introduces a speech coding scheme and a tone modification method for Chinese speech synthesis based on prototype waveform interpolation ( PWI ) algorithm .

本论文主要完成基于原型波形内插（PWI-PrototypeWaveformInterpolation）算法的语音编码和基于这一算法在汉语语音合成中声调调整方面的研究。

Perfusion-weighted imaging ( PWI ) in differentiating recurrent brain metastases after gamma knife treatment from delayed cerebral necrosis treatment

脑转移瘤伽玛刀后复发和放射性脑坏死的磁共振灌注成像鉴别诊断

Objective The goal of our study is to evaluate methods of MR perfusion weighted imaging ( PWI ) in brain neoplasms and its clinical application .

目的本研究旨在初步评价脑肿瘤磁共振灌注成像（PWI）的成像方法及其临床应用价值。

Conclusion DWI , PWI and MRS are very useful in preoperative predicting tumor grade of ( astrocytoma ) .

结论DWI、PWI及MRS对星形细胞瘤的术前分级具有重要价值。

Thus , the PWI / DWI mismatch includes not only the penumbra periphery , but also surrounding intact tissue .

因而，PWI/DWI错配不仅包括外围半影还包括周围完整的组织。

Objective To investigate the value of DWI , PWI and MRA in the diagnosis of transient ischemic attack ( TIA ) .

目的观察弥散成像（DWI）、血流灌注成像（PWI）、磁共振血管造影（MRA）对短暂性脑缺血发作（TIA）的诊断意义。

Conclusion PWI is very useful in diagnosis and differential diagnosis among grade ⅲ - ⅳ gliomas , metastatic tumors and abscess of brain .

结论PWI在Ⅲ～Ⅳ级胶质瘤、脑转移瘤及脑脓肿的诊断和鉴别诊断中具有重要价值。

Objective To investigate the value of MR perfusion-weighted imaging ( PWI ) in the evaluation of therapeutic effect of brain metastases with gamma knife .

目的评估磁共振灌注成像（PWI）在脑转移瘤伽玛刀疗效中的应用价值。

Objective To evaluate the potential of perfusion weighted imaging ( PWI ) in diagnosis and differential diagnosis among brain neoplasm in posterior cranial fossa .

目的评价磁共振灌注成像（PWI）在后颅凹肿瘤的诊断和鉴别诊断中的价值。

In2006 , PWI opened its Shenzhen office with a full wine import licence in China to serve the fast-growing market in the Mainland .

为迎合中国大陆高速增长的葡萄酒市场，我们于2006年在深圳开设办事处，并成为国内注册之葡萄酒进口商。

Objective : To study the imaging features of cerebral and spinal hemangioblastomas with CT , MR scanning and MR perfusion weighted imaging ( PWI ) .

目的：分析脑和脊髓血管母细胞瘤的CT、MRI及MR灌注成像（PWI）表现，着重讨论血管母细胞瘤的PWI特点。

Application of functional magnetic resonance diffusion weighted imaging ( DWI ) and perfusion weighted imaging ( PWI ) MRI can diagnose early acute cerebral infarction .

功能MR弥散加权成像（DWI）和血流灌注成像（PWI）磁共振技术的应用可诊断早期脑梗死，结合DWI和PWI可以确定缺血半暗带和血流灌注情况；

Conclusion PWI examination can depict the improved situation of cerebral perfusion after surgery or interventional therapy , and provided the basis of imaging for evaluating curative effect .

结论PWI检查能够观察外科和介入治疗前后脑灌注的改善情况，为评价疗效提供影像学依据。

Recent developments in MR perfusion weighted imaging ( MR PWI ) techniques can assess distribution of microvessel and blood perfusion of tissue , and provide hemodynamics information .

近年来迅速发展的MR灌注加权成像技术（Perfusionweightedimaging，MRPWI）能反映组织的微血管分布及血流灌注情况，提供血流动力学方面的信息。

Despite these shortcomings , the DWI / PWI mismatch is used to select patients for treatment in large clinical trials of thrombolytic agents ( 15,16 ) .

尽管有这些缺点，DWI/PWI不匹配仍然用于为大型溶栓试剂临床试验选择病人。

Purpose : Combined with pathological observation , to study the change of DWI , PWI in the occlusion and reperfusion of the right middle cerebral artery of rats .

目的研究弥散加权成像（DWI）及血流灌注成像（PWI）在大鼠大脑中动脉阻塞及再灌注过程中的动态变化以及病理学基础。