摘要
目的 :比较分析DSA、3DTOFMRA及CT对颅内动脉瘤的诊断价值。方法 :30例颅内动脉瘤均经血管造影和手术证实 ,所有病例均先后作CT、3DTOFMRA及DSA检查 ,对其影像学特征进行比较研究。结果 :DSA显示全部瘤体 ,呈囊状、梭形局部突出影 ;3DTOFMRA显示 2 8个动脉瘤 (2个假阳性 ) ,4个未显示 ,其显示动脉瘤的敏感性为86 .7% ,假阳性为 6 .7%。CT显示瘤体及蛛网膜下腔出血提示动脉瘤者 1 5例 ,占 50 % ;无异常者 8例 ,占 2 6 .7%。结论 :DSA仍然是诊断颅内动脉瘤的金标准 ;3DTOFMRA虽然是显示颅内动脉瘤的敏感方法之一 ,但对确定治疗方案价值低于DSA ;CT敏感性较差 。
Objective:To compare DSA,3D TOF MRA and CT in diagnosis of intracranial aneurysm(IA).Methods:Thirty patients with IA verified by surgery and angiography were studied by CT,3D TOF MRA and DSA.Their imaging manifestations were compared.Results:All of 30 aneurysms were identified at intracranial DSA.28 aneurysms (2 false) were depicted and 4 aneurysms were missed by MRA.Sensitivity and false positive of MRA for detecting IA were 86.6% and 6.7% respectively.CT demonstrated aneurysm itself and acute subarachnoid hemorrhage (SAH) suggesting aneurysm in 15 patients(50%).No aneurysm was found in 8 patients (6.7%) on CT scanning.Conclusion:DSA is still the gold standard for diagnosis of IA.3D TOF MRA is one of sensitive methods to identify IA and is currently inferior to DSA in assessment of IA.CT can display aneurysm itself and acute subarachnoid hemorrhage and cue aneurysm with lower sensitivity.
出处
《放射学实践》
2003年第4期249-251,共3页
Radiologic Practice
