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首页> 外文期刊>Journal of computer assisted tomography >Preliminary experience of 256-row multidetector computed tomographic angiography for detecting cerebral aneurysms
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Preliminary experience of 256-row multidetector computed tomographic angiography for detecting cerebral aneurysms

机译：256行多排计算机断层扫描血管造影术检测脑动脉瘤的初步经验

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OBJECT: Multidetector computed tomographic angiography (MDCTA) has played an increasing role in detecting cerebral aneurysms. This study was performed to investigate the diagnostic accuracy of the upgraded 256-row MDCTA in the detection of cerebral aneurysms. METHODS: We identified 93 patients who had undergone both MDCTA and digital subtraction angiography (DSA) before surgery for the detection of cerebral aneurysms. Two and one independent blinded readers reviewed the MDCTA images and DSA images, respectively. The sensitivity, specificity, accuracy, and positive and negative predictive values were calculated for the image interpretation from the two CTA readers and one DSA reader using the combination of DSA and intraoperative findings as the reference standard. RESULTS: A total of 77 intracranial aneurysms were detected in 67 of the 93 patients. The overall sensitivity, specificity, and accuracy of the 256-row MDCTA in the detection of cerebral aneurysms were 96.10%, 92.31%, and 94.23%, respectively. For aneurysms larger than 5 mm, the overall sensitivity, specificity, and accuracy were 100%, 92.31%, and 96.83%, respectively. For aneurysms smaller than 5 mm, the overall sensitivity, specificity, and accuracy were 92.50%, 92.31%, and 92.42%, respectively. There was no significant difference for the sensitivity, specificity, and accuracy of 256-row MDCTA to detect cerebral aneurysm according to the conscious level of the patients. CONCLUSIONS: To detect cerebral aneurysms larger than 5 mm, 256-row MDCTA is an imaging method with a satisfactory diagnostic performance equal to that of DSA. However, its diagnostic performance for aneurysms smaller than 5 mm is still inferior to that of DSA.
机译：目的：多探测器计算机断层血管造影（MDCTA）在检测脑动脉瘤中起越来越重要的作用。进行这项研究以调查升级的256行MDCTA在检测脑动脉瘤中的诊断准确性。方法：我们确定了93例术前接受过MDCTA和数字减影血管造影（DSA）检查的患者，以检测脑动脉瘤。两个和一个独立的盲读者分别查看了MDCTA图像和DSA图像。使用DSA和术中发现的结果作为参考标准，从两个CTA阅读器和一个DSA阅读器中计算图像解释的敏感性，特异性，准确性以及阳性和阴性预测值。结果：93例患者中有67例颅内动脉瘤被发现。 256行MDCTA在检测脑动脉瘤中的总体敏感性，特异性和准确性分别为96.10％，92.31％和94.23％。对于大于5毫米的动脉瘤，总体敏感性，特异性和准确性分别为100％，92.31％和96.83％。对于小于5毫米的动脉瘤，总体敏感性，特异性和准确性分别为92.50％，92.31％和92.42％。根据患者的意识水平，256行MDCTA检测脑动脉瘤的敏感性，特异性和准确性无明显差异。结论：要检测大于5mm的脑动脉瘤，256行MDCTA是一种影像学方法，其诊断性能与DSA相当。但是，它对小于5毫米的动脉瘤的诊断性能仍不如DSA。

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