摘要
目的旨在探讨64层螺旋CT后处理技术在冠状动脉支架植入术后复查中的应用价值。方法选取我院2016年6月-2017年11月行冠状动脉支架植入术后回院复查患者37例,均进行了CT冠状动脉成像检查,收集患者影像学资料,观察患者支架、支架血管及非支架血管的通畅程度,分析螺旋CT后处理技术在冠状动脉支架植入术后复查中的应用价值。结果共56个支架,51个(91.07%)支架通畅,CT平扫图像显示支架内密度均匀,增强扫描后冠状动脉血管密度与支架内密度相一致,支架近段未见狭窄情况,支架远端图像表现正常。多数前降支血管CPR图像显示近段见金属支架影,管腔通畅,4例患者合并钙化斑块影;3个支架出现狭窄或闭塞,CT平扫可见支架内见低密度影,CPR图像与血管横断面图像显示,管腔狭窄率约30%-70%,增强扫描中1个支架内未见造影剂影,于毗邻出见纤细侧枝循环血管影。CPR图像在27支血管中,显示支架前软斑块10个,局部管腔无明显狭窄,中段见钙化斑块;硬斑块5个,混合性斑块3个,远端软斑块5个,硬斑块2个,混合性斑块2个。心脏VR图像及心脏VR tree图像均可明显显示患者冠脉血管见金属支架影,发现37例患者中,21支血管出现非支架血管狭窄,其中单支血管13例,双支血管8例。结论 64层螺旋CT后处理技术可直观、立体显示冠状动脉内支架是否再次发生狭窄情况,能作为冠状动脉支架植入术后复查的主要检查手段。
Objective To explore the value of 64-slice spiral CT post-processing technique in the reexamination after coronary stent implantation.Methods A total of 37 cases of patients who accepted reexamination after coronary artery stent implantation in our hospital from June 2016 to November 2017 were selected.All of the patients were checked by CT coronary artery scan,and their imaging data were collected.After the observation of their patency in stents,stents blood vessels,and non-vascular stent spiral,the analysis of application value of CT post-processing technique in the reexmination of coronary artery stent implantation were represented.Results According to the CT scan image among 56 stents,51(91.07%)stent gained patency,and uniform densit.After enhancement of scanning,coronary artery vascular density is consistent with the density of the stent,and stent stenosis was not seen at the near end,and the end of stent appeared normal.Most CPR images of the anterior descending vascular showed metal stent shadow in the near segment and patency in blood vessels,with unobstructed lumen and calcified plaque shadow in 4 patients.Three stents appeared stenosis or occlusion.CT scan was visible inside to see low density shadow,and the CPR images and vascular cross-sectional images showed that luminal stenosis rate is about 30%-30%.No contrast agent in the enhancement scanning was seen in a stent,adjacent to which slender vessels collateral circulation was observed.CPR images in 27 vessels showed 10 soft plaques in front of the stent,no obvious stenosis in the local lumen,and calcified plaques in the middle segment.There were 5 hard plaques,3 mixed plaques,5 soft plaques,2 hard plaques and 2 mixed plaques.Heart VR images and heart VR tree images can clearly show that patients with coronary blood vessels had metalic stents.In 37 found cases,21 of the blood vessels were appeared in the vascular stenosis stent,including 13 cases of single blood vessels,8 cases of double vessels.Conclusion 64-spiral CT post-processing technique can be intuitively,three-dimensional display of coronary artery stent to show whether the stenosis happened again,it can also be used as a main approach for reexmination after coronary artery stent implantation.
作者
杨萌
孙海燕
王希娟
赵国安
YANG Meng;SUN Hai-yan;WANG Xi-juan(Department of Cardiovascular Medicine,Third Affiliated Hospital of Xinxiang Medical College,Xinxiang 453000,Henan Province,China)
出处
《中国CT和MRI杂志》
2019年第1期71-73,共3页
Chinese Journal of CT and MRI
基金
河南省医学科技攻关计划项目(编号:201602148)
关键词
64层螺旋CT
后处理技术
冠状动脉支架植入
术后复查
64-slice Spiral CT
Post Processing Technique
Coronary Stent Implantation
Postoperative Review
