头颅CTA与DSA对颅内动脉瘤诊断价值的对比研究

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目的探讨头颅CT血管造影( CTA)和数字减影血管造影( DSA)在诊断颅内动脉瘤中的优势及其特点。方法由颅内动脉瘤破裂引起的自发性蛛网膜下腔出血( SAH)患者54例,均先行头颅CTA,后行DSA检查,比较两者的影像质量及影像特点。结果54例患者DSA检出47例62个动脉瘤, CTA检出45例58个动脉瘤,两种方法检出率比较差异无统计学意义( P>0.05),但CTA在显示动脉瘤的图像质量方面优于DSA(P<0.05)。结论在颅内动脉瘤影像学诊断上,头颅CTA和DSA各有特点和优势,DSA与CTA两种检
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