双源CT血管成像对头颈部动脉支架置入后通畅情况分析

Value of dual source CT angiography in assessing the patency of stents placed in cerebral and carotid arteries

目的 探讨双源CT血管成像（dual source CT angiography,DSCTA）对头颈部动脉支架置入后通畅情况的诊断价值.方法 选择在我院放射科行头颈部DSCTA检查的患者55例,支架置入术后时间为3个月-3年.记录患者一般临床资料,采用多种后处理方法综合分析支架内有无斑块及斑块性质.结果 55例患者共发现69枚支架,斑块引起管腔再狭窄27枚,占39.1％,斑块主要分布在支架两端及支架内血管分支处,且以软斑块为主.结论 DSCTA对头颈部动脉支架置入后通畅情况显示良好,能明确支架内斑块位置、性质及支架管腔狭窄程度,可作为临床医师评估支架的一种手段.

Objective To study the value of dual source CT angiography in assessing the patency of stents placed in cerebral and carotid arteries.Methods Fifty-five patients who underwent cerebral and carotid dual source CT angiography in our epartment were included in this study.Three months-3 years after stenting,their general data were recorded.Plaques in stents and their nature were analyzed.Results Sixty-nine stents were implanted in 55 patients.Plaques led to stenosis in 27 stents （39.1％）.The plaques,especially soft plaques,were mainly distributed in both ends and at vascular bifurcation of the stent.Conclusion dual source CT angiography can display the patency of stents placed in cerebral and carotid arteries,location and nature of plaques,severity of stenosis in stents,and can thus be used as a tool for clinicians to assess stents.