Multidetector CTA in the Quantification of Internal Carotid Artery Stenosis: Value of Different Reformation Techniques and Axial Source Images Compared With Selective Carotid Arteriography

被引:14
|
作者
Puchner, Stefan [1 ]
Popovic, Martin [1 ]
Wolf, Florian [1 ]
Reiter, Markus [1 ]
Lammer, Johannes [1 ]
Bucek, Robert A. [1 ]
机构
[1] Med Univ Vienna, Vienna Gen Hosp, Dept Radiol, A-1090 Vienna, Austria
关键词
computed tomographic angiography; carotid artery; stenosis; reformations; angiography; volume rendering; virtual angioscopy; MAGNETIC-RESONANCE ANGIOGRAPHY; DIAGNOSTIC-ACCURACY; MR-ANGIOGRAPHY; TIME;
D O I
10.1583/08-2636.1
中图分类号
R61 [外科手术学];
学科分类号
摘要
Purpose: To evaluate the role of 4 different reformation techniques and axial images from multidetector computed tomographic angiography (MDCTA) versus selective carotid arteriography (SCA) in patients with internal carotid artery (ICA) stenosis. Methods: Imaging studies from 50 patients (43 men; mean age 70.3 +/- 8.0 years, range 5185) with known cerebrovascular disease who underwent MDCTA and SCA in a single university hospital were retrospectively analyzed. Axial images, multiplanar reformation (MPR), curved planar reformation (CPR), volume rendering threshold (VRT), and virtual angioscopy (VA) images were reviewed by 2 independent observers who were blinded to the results of SCA, which served as the gold standard. The degree of stenosis was categorized as 0%-49%, 50%-69%, or 70%-99%; a stenosis >70% was considered as hemodynamically significant. Results: Thirty-four hemodynamically significant stenoses were identified on SCA. The agreement with SCA images was good for both observers using axial CT images (kappa=0.89 for observer 1 and 0.88 for observer 2); corresponding results for MPR and CPR were kappa=0.91 and 0.92 for observer 1 and 0.88 and 0.91 for observer 2, respectively. VRT (kappa=0.72 for observer 1 and 0.66 for observer 2) and VA (kappa=0.74 for observer 1 and 0.70 for observer 2) showed a slightly inferior correlation with SCA images. Sensitivities for reformations and axial CT images were 100% each; corresponding specificities ranged from 85% to 95%. Conclusion: Axial images as well as all 4 reformation techniques agreed well with SCA in the grading of ICA stenosis. J Endovasc Ther. 2009;16:336-342
引用
收藏
页码:336 / 342
页数:7
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