暗带

白光通过某种物质时，某些波长的光被有选择性地吸收而在光谱上留下的暗带。

A dark band in the spectrum of white light that has been transmitted through a substance that exhibits absorption at selective wavelengths .

CT灌注成像对脑缺血半暗带的评估研究

Study on Ischemic Penumbra of Brain by Means of CT Perfusion

BEAM可显示半暗带的范围及损伤程度。

BEAM could display the range and degree of injury of IP .

急性卒中缺血半暗带的CT灌注成像

CT Perfusion Imaging of Ischemic Penumbra in Acute Stroke

阐明灌注CT对显示脑缺血半暗带的价值。

To elucidate the value of perfusion CT for identifying cerebral ischemic penumbra .

超急性期脑梗死CT灌注图中缺血半暗带的定位及病理基础的实验研究

The location and pathology of penumbra of hyperacute cerebral infarction in CT perfusion map

大鼠脑缺血再灌注后半暗带CAD基因的表达改变

Expression of Caspase-activated DNase gene after focal reversible ischemia in rat brain

因此，CT灌注成像在判断卒中后缺血半暗带研究中的应用日益广泛。

Therefore , CTP has been widely used in predicting the studies of ischemic penumbra after stroke .

脑梗塞患者缺血半暗带的PET检查

PET Measurement of Ischemic Penumbra in Patients with Cerebral Infarction

大鼠局灶性脑缺血β淀粉样前体蛋白mRNA在缺血半暗带的表达变化

Changes of Amyloid Precursor Protein mRNA in Rats ′ Ischemic Penumbra of Cortices

叶酸联合维生素B6/B（12）对脑缺血半暗带区影响

Effects of folic acid , vitamin B_6 and vitamin B_ ( 12 ) on ischemic penumbra in cerebral ischemia rats

大鼠脑缺血再灌注半暗带β淀粉样前蛋白mRNA表达与梗死体积的关系

Relationship between amyloid precursor protein mRNA expression in ischemic penumbra and infarct size of rats

目的探讨CT灌注成像缺血半暗带两种判定方法的一致性。

Objective To evaluate the consistency between two reported methods for assessing the penumbra in hyperacute cerebral ischemia by CT perfusion .

结论包膜期脑脓肿的MRI表现有一定的特征，其中暗带最具特征。

Conclusion Brain abscess in capsule-period had a specific MR finding , especially the low-signal zone in the wall .

因此，有些医院诊断急性缺血性卒中主要依靠灌注CT的参数图，来鉴别梗死中心和缺血半暗带。

Therefore , some hospitals the diagnosis of acute ischemic stroke mainly depends on the parameters of CT perfusion maps , to identify infarction centers and ischemic penumbra .

其治疗目标应是挽救可逆性缺血组织&缺血性半暗带（IP），以缩小梗塞范围和改善神经功能。

The therapeutic target is to salvage potentially reversible ischemic tissue ( ischemic penumbra , IP ) to reduce infarct size and improve neuro muscular function .

结论脑出血后HIF-1α的表达与出血量及手术时间相关，为判断脑出血灶周缺血半暗带的存在提供了依据；

Conclusion Expression of HIF-1 α is closely related with the time of hemorrhage .

超急性与急性期脑缺血半暗带演变的DWI研究

Diffusion-weighted imaging evolution of brain ischemia penumbra in hyperacute and acute stages

TUNEL法凋亡染色。观察脑梗死灶半暗带区凋亡细胞的变化；

TUNEL apoptotic staining to observe changes of apoptotic cells of the penumbra respectively .

提示参麦注射液可能通过调节Bcl-2mRNA、BAXmRNA表达抑制脑出血后血肿周围缺血半暗带的神经细胞凋亡。

The results suggested that SM Injection could antagonize the neuronal apoptosis by regulating the expression of Bcl-2 mRNA and Bax mRNA .

目的探讨CT灌注和CT血管成像对缺血性卒中患者早期诊断缺血半暗带和缺血部位的作用。

Objective To investigate the effect of computed tomography perfusion ( CTP ) imaging and computed tomography angiography ( CTA ) in detecting ischemic penumbra and location of early ischemic stroke .

Ghrelin对脑梗塞半暗带区神经细胞的保护作用

The Neuroprotective Effects of Ghrelin on the Ischemic Penumbra in Focal Cerebral Infarct

电针上调MCAO大鼠皮质缺血半暗带脑红蛋白的表达

Up-regulation of electroacupuncture on the expression of neuroglobin in cortical penumbra of MCAO rats

DWI与PWI相结合能判断脑梗死半暗带的存在与否及其范围。

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

吸烟对大鼠局灶性脑缺血半暗带内细胞凋亡及Fos蛋白表达的影响

Effects of Smoking on Cell Apoptosis and Expression Level of Fos Protein in Rat Brain Ischemic Penumbra

在缺血中心区及缺血半暗带区，Caspase一1与凋亡细胞在缺血再灌注后不同时间点的表达变化规律一致，提示Caspase一1诱导细胞凋亡发生。

In ischemic penumbra , caspase-1 expression enhances with the time extend and promotes neuron apoptosis .

海洋内波在星载SAR图像上表现为明显的亮、暗带，通过SAR图像分析可以提取其波长和传播方向参数。

Oceanic internal waves present bright and dark bands on the satellite SAR images , wavelength and direction parameters can be extracted by the SAR image analysis .

结论在局灶脑缺血早期，糖尿病鼠缺血半暗带区vEGFmRNA表达不足，在超早期尤为显著。

Conclusion The expression of VEGF mRNA in diabetes rats with focal cerebral ischemia was insufficient during early period . Insufficiency was prominent in the super-early period .

结论CTP对超早期半球缺血有诊断价值，能发现缺血半暗带，可成为急性半球缺血的常规检查。

Conclusions CTP might be used as a routine test in diagnosing hyperacute hemisphere ischemia .

由于普通CT平扫在患者入院时并不能发现病灶，更不能判断缺血半暗带的存在，可是，灌注CT却可以做到这一点。

As in patients with normal CT scan does not find lesions on admission , but can not determine the existence of ischemic penumbra , however , perfusion CT but can do this .