Sixteen-row multislice computerized tomography angiography in the postoperative evaluation of patients with intracranial aneurysms

被引:15
|
作者
Chen, W. [1 ]
Yang, Y. [2 ]
Qiu, J. [1 ]
Peng, Y. [2 ]
Xing, W. [1 ]
机构
[1] Suzhou Univ, Affiliated Hosp 3, Dept Radiol, Changzhou 213003, Peoples R China
[2] Suzhou Univ, Affiliated Hosp 3, Dept Neurosurg, Changzhou 213003, Peoples R China
关键词
aneurysm clip; computed tomography angiography; digital subtraction angiography; intracranial aneurysm; postoperative evaluation;
D O I
10.1080/02688690701630108
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
The goal of this study was to assess the diagnostic accuracy of 16-row multislice computed tomography angiography (CTA) compared with digital subtraction angiography (DSA) in the detection of aneurysm remnants and arterial patency after clipping of intracranial aneurysms. Thirty-seven consecutive patients with 40 clipped aneurysms (39 of which had ruptured) were studied with the aid of postoperative CTA and DSA. CTA was performed with a 16-row multislice CT scanner by using collimation of 0.75mm. Two neuroradiologists evaluated the image quality of CTA and the presence of the residual aneurysms with a 5-point rating scale. DSA was considered a reference standard. Two aneurysms with incomplete closure were identified by the 16-slice CTA reconstructions. With 16-slice CTA, there were no false-positive results of an aneurysm with incomplete closure in any patient. Arterial patency could be reliably evaluated close to the clip. The sensitivity, specificity, and accuracy of 16-slice CTA for aneurysm occlusion and arterial patency were 100% [97.5% confidence interval (CI): 15.8-100%], 100% (97.5% CI: 90.7-100%) and 100% (97.5% CI: 91.2-100%), respectively. The positive and negative predictive values were 100 and 100%, respectively. The mean duration of the examination was 12min for CTA and 40min for DSA (p < 0.05). Sixteen-slice CTA was highly cost effective (p < 0.05). Sixteen-slice CTA is a valuable non-invasive diagnostic modality for the assessment of aneurysm remnants and arterial patency in patients after aneurysm clipping. Its high sensitivity and low cost warrant its use for postoperative routine control examinations following clip placement on an aneurysm.
引用
收藏
页码:63 / 70
页数:8
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