MRA在识别颅内小动脉瘤形状上的应用价值:与DSA对比  

The Value of MRA in Identifying The Shape of Small Intracranial Aneurysms:Compared with DSA

作　　者：丁杰[1] 高伟[1] 陆小妍 郭群[1] 吴含[1] DING Jie;GAO Wei;LU Xiao-yan;GUO Qun;WU Han(Department of Radiology,Nanjing First Hospital,Nanjing Medical University,Nanjing 210006,Jiangsu Province,China)

机构地区：[1]南京医科大学附属南京医院(南京市第一医院)医学影像科,江苏南京210006

出　　处：《中国CT和MRI杂志》2023年第4期4-6,共3页Chinese Journal of CT and MRI

摘　　要：目的 探讨磁共振血管成像(MRA)识别小尺寸未破裂颅内动脉瘤形状的应用价值。方法 回顾性分析由MRA发现并经DSA证实的38例未破裂颅内小动脉瘤(<7 mm)。将所有动脉瘤分为两组(≤3mm及3.1mm-6.9mm),使用MRA分析动脉瘤的形状,数字减影血管造影(DSA)检查结果作为动脉瘤形状的参考标准,评估MRA的敏感性、特异性和准确性。结果 MRA评估≤3mm组动脉瘤的敏感性41.6%、特异性57.1%、阴性预测值36.4%、阳性预测值62.5%、准确性47.4%,评估3.1mm-6.9mm组动脉瘤的敏感性81.8%、特异性91.7%、阴性预测值84.6%、阳性预测值90.0%、准确性87.0%。结论 MRA评估≤3mm颅内小动脉瘤形状的价值较低,而对3.1mm-6.9mm动脉瘤的应用价值较高。Objective To explore the application value of magnetic resonance angiography(MRA)in identifying the shape of small unruptured intracranial aneurysms.Methods 38 cases of unruptured intracranial aneurysms(<7 mm)found by MRA and confirmed by DSA were retrospectively analyzed.All aneurysms were divided into two groups(≤3mm and 3.1mm-6.9mm).The shape of aneurysms was analyzed by MRA,and the results of digital subtraction angiography(DSA)were used as the reference standard to evaluate the sensitivity,specificity,negative predictive value,positive predictive value and accuracy of MRA.Results The sensitivity,specificity,negative predictive value,positive predictive value and accuracy of MRA in identifying the shape of small unruptured intracranial aneurysms in≤3mm group were 41.6%,57.1%,36.4%,62.5%and 47.4%,respectively.The sensitivity,specificity,negative predictive value,positive predictive value and accuracy of aneurysms in the 3.1mm-6.9mm group were 81.8%,91.7%,84.6%,90.0%and 87.0%respectively.Conclusion MRA is of low value in evaluating the shape of small intracranial aneurysms less than or equal to 3mm,but of high value in the application of 3.1mm-6.9mm aneurysms.

关 键 词：磁共振血管造影 颅内动脉瘤 动脉瘤的形状 数字减血管造影术 

分 类 号：R445.2[医药卫生—影像医学与核医学] R743.32[医药卫生—诊断学]