查询词典 ischemia

On the other hand, sensitivity and specificity of grade II and grade III CT signs for presence of lenticulostriate artery involvement in ischemia were 77% and 100%, respectively.

II级CT征象和III级CT征象提示豆纹动脉受累的敏感性及特异性分别为77%及100%。不同的动脉闭塞位置均可导致出现II级CT征象

Even within 3 hours after onset of ischemia, involvement of the lenticulostriate arteries may be presumed by precise evaluation of subtle hypodensity in the deep MCA territories.

即使于缺血性卒中发病3小时内行脑部CT检查，只要对深部大脑中动脉分布区的低密度进行精确的评估，仍可判断豆纹动脉是否受累。

When grade I CT signs were present, there was little possibility of the involvement of the lenticulostriate arteries in ischemia.

当深部大脑中动脉分布区出现I级早期CT征象（细微低密度区局限于岛叶，基底节区正常）时，豆纹动脉受累发生缺血的可能性很小

When the MCA trunk is occluded at its origin, and all of the lenticulostriate arteries are involved in ischemia (type 1 occlusion), hypodensity usually extends to the entire lentiform nucleus.

当大脑中动脉主干的起始段发生闭塞、造成所有豆纹动脉均受累缺血（1型大脑中动脉闭塞）时，通常整个豆状核区都会出现低密度

We attempted to investigate the incidence of parenchymal hypodensity within 3 hours after ischemic onset among patients with angiographically proved embolic MCA occlusion and to assess the correlation of subtle hypodensity in the deep MCA territories with involvement of the lenticulostriate arteries in the presence of ischemia.

本研究调查发病3小时以内、经脑血管造影证实为大脑中动脉栓塞的患者中，CT出现梗塞区脑实质低密度的发生率；并评估深部大脑中动脉分布区细微低密度与豆纹动脉受累之间的关系。

Although a grade II CT sign resulted from various types of MCA occlusion, it was reliably predictive for the presence of partial, or sometimes total, involvement of the lenticulostriate arteries in ischemia.

尽管深部大脑中动脉分布区II级早期CT征象（部分壳核后外侧区出现低密度）可因各种类型的动脉闭塞位置所引起；但通常提示部分或所有豆纹动脉受累发生缺血。

On the other hand, because the insular region is mainly supplied by the M2 segments, only loss of the insular ribbon without obscuration of the lentiform nucleus may be usually seen in type 3 or type 4 occlusions. Although there are few exceptions of type 1 occlusion manifesting a grade I CT sign in the very early period of ischemia, grade I CT signs are usually considered as supporting evidence of absent lenticulostriate artery involvement.

尽管在缺血性卒中发病后的超早期，1型大脑中动脉闭塞（大脑中动脉主干起始段闭塞）患者的深部大脑中动脉分布区可能偶尔也会出现I级早期CT征象（细微低密度区局限于岛叶，基底节区正常）；但深部大脑中动脉分布区I级早期CT征象（细微低密度区局限于岛叶，基底节区正常）的出现，通常提示豆纹动脉未受累。

On the other hand, if the medial lenticulostriate arteries escape from ischemia, the medial part of the lentiform nucleus may be spared ischemic injury, and early CT signs may be restricted to the lateral or posterior part of the lentiform nucleus.

另一方面，如果内侧豆纹动脉群（medial lenticulostriate arteries）没有受累发生缺血，那么豆状核内侧区可能就不会发生缺血损伤，早期CT征象可能就仅限于豆状核的后部或外侧部

The thin-slice MRI scan were examed at 2,4,6,8,10,12hours on the experimental group.The histopathological changes in different period were studied. Results The MRI intensity as 2 hours after ischemia increased signal intersity on T2W imaging were observed at the head of caudate nucleus and the lentiform nucleus.

经颞开颅阻断一侧大脑中动脉，造成MCA供应区急性缺血性脑梗塞，术后4、6、8、12h行MRI薄层扫描；取出动物大脑观察病理改变，测定不同时相梗塞区T2时间和组织水含量。

Objective: To investigate the protective effects and mechanism of leonurus japonicus injection on myocardial ischemia reperfusion injury in rats.

目的：探讨益母草注射液对心肌缺血再灌注损伤的保护作用及机制。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。