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目的比较双源CT造影(DE-CTA)、MRA和DSA在颅内动脉瘤患者中的阳性率。方法收集2012年1月-2014年8月来该院就诊的颅内动脉瘤疑似病例198例,所有患者均行DE-CTA、MRA和DSA三项检查,分别以三项检查为依据诊断患者是否具有颅内动脉瘤,并与诊断金标准比较计算各项检查灵敏度、特异度和诊断错误率的差异,探讨其临床意义。结果经计算可知MRA灵敏度和特异度最低,DE-CTA稍高,而DSA最高,3组间灵敏度均存在统计学意义(P<0.05),而彼此间特异度差异均无统计学意义(P>0.05)。3组间错误诊断率比较,由高到低依次为MRA、DE-CTA和DSA,3组间差异亦存在统计学意义(P<0.05)。结论 DSA灵敏度和准确度最高,DE-CTA次之,MRA最小,但三者的特异性无明显差异,考虑到操作的简便性及无创性,所以DE-CTA、MRA可用作DSA的辅助检查。
Objective To compare the positive rates of dual-source CT angiography (DE-CTA), MRA and DSA in patients with intracranial aneurysms. Methods A total of 198 cases of intracranial aneurysms were collected from January 2012 to August 2014 in our hospital. All patients underwent DE-CTA, MRA and DSA examinations. All patients were diagnosed on the basis of three tests With intracranial aneurysms, and compared with the diagnostic criteria to calculate the sensitivity of the test sensitivity, specificity and diagnostic error rate differences to explore its clinical significance. Results The results showed that MRA had the lowest sensitivity and specificity, the higher DE-CTA, the highest DSA, and the sensitivity of the three groups were statistically significant (P <0.05), but there was no significant difference between them (P> 0.05). Among the three groups, the error rates of MRA, DE-CTA and DSA from high to low were also statistically significant (P <0.05). Conclusions DSA has the highest sensitivity and accuracy, followed by DE-CTA and the lowest MRA. However, the specificity of DSA is not significantly different. Taking into account the simplicity of operation and noninvasiveness, DSA can be used as an auxiliary examination for DSA .