目的探讨16层螺旋CT血管造影（CTA）对颅内动脉瘤的诊断价值，以及对动脉瘤夹闭术后评价其指导价值。
Objective To assess the values of 16 slices CT angiography (CTA) in the diagnosis and postoperative follow-up of intracranial aneurysms after clip.
本发明涉及一种螺旋输送机前后管体焊接装置，其特征是由装夹和传动两部分组成；
The invention relates to a front and rear tube welding device for a spiral conveyer, which is characterized by consisting of two parts, namely a clamping part and a transmission part.
撑衣框的一边通过圆柱螺旋扭转弹簧的中心孔贯穿在大、小弧夹片的通孔中。
One side of the clothes-supporting frame passes through the centre hole of the cylindrical helical torsion spring to permeate in the through holes of the big arc clip and the small arc clip.
因此在夹套内合理设置螺旋导流板，一方面为夹套内的流体导流，能更好地加热或冷却容器内的物料；
Therefore, in the jacketed vessel, the reasonable spiral deflector on the one hand can flow the fluid which is in the jacketed vessel, it can heat or cool the materiel in the vessel better;
因此在夹套内合理设置螺旋导流板，一方面为夹套内的流体导流，能更好地加热或冷却容器内的物料；
Therefore, in the jacketed vessel, the reasonable spiral deflector on the one hand can flow the fluid which is in the jacketed vessel, it can heat or cool the materiel in the vessel better;
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