动脉

Objective To explore CT appearance of calcification in intracranial intravertebral canal vertebral artery and to make a further understanding of this diease.

目的 探讨颅内段椎管内段椎动脉钙化的CT表现，以提高对该病变的认识方法回顾性分析经CT诊断的22例颅内段椎管内段椎动脉钙化。

Site of occlusion and involvement of the lenticulostriate arteries were confirmed by angiography.

动脉闭塞的位置及豆纹动脉究竟是否受累，则通过行脑血管造影来进一步明确。

In contrast, when grade III CT signs were present, all of the lenticulostriate arteries were involved in ischemia.

相反，当深部大脑中动脉分布区出现III级早期CT征象（整个豆状核区均出现低密度）时，所有豆纹动脉均受累缺血。

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

Grade II CT signs resulted from various sites of occlusion, whereas grade III was unequivocally predictive of proximal occlusion to all of the lenticulostriate arteries.

而III级CT征象则均明确地提示：大脑中动脉主干的起始段发生了闭塞、所有豆纹动脉均受累缺血。

Involvement of the lenticulostriate arteries may be presumed by precise evaluation of subtle, CT-revealed hypodensity in the deep MCA territories, even within 3 hours of ischemic onset.

即使在缺血性卒中发病后3小时以内，通过精确地评价CT上深部大脑中动脉分布区是否出现细微的低密度，可以推测豆纹动脉是否受累。

A grade I CT sign was considered to be a negative finding for lenticulostriate artery involvement, whereas grade II and III CT signs were considered to be positive findings.

I级CT征象被人为认定提示豆纹动脉未受累；II级CT征象和III级CT征象则被人为认定提示豆纹动脉受累。

Results:Sensitivity of dense artery sign,lentiform nucleus sign,insular ribbon sign,space occupying effect,hypodensity lesion and cortical sign were 20.8%,23.6%,8.8%,11.6%,56.8%and 14.8%respectivelyP＜0.05 as compared with normal control group.

结果：正常组：致密动脉征占11％，豆状核征占5％，脑岛带征占1％，其它征象均为阴性；病变组：致密动脉征占20.8％，豆状核征占23.6％，脑岛带征占8.8％，低密度灶占56.8％，占位征占11.6％，皮质征占14.8％(与正常组相比P均＜0.05)。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。