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颈内动脉(ICA)穿通硬膜处发生的动脉瘤称为JDRAn,大致分为硬膜内动脉瘤和硬膜外动脉瘤。为了解3D-CTA在分析动脉瘤与海绵窦的位置关系及判定动脉瘤在硬膜内、外延伸的诊断价值,对经MRA、DSA及手术确诊的23例27个JDRAn进行了研究。其中单发12例,多发11例。未破裂动脉瘤21例,破裂1例,破裂合并未破裂者1例。硬膜内动脉瘤17个,硬膜外8个,硬膜内外动脉瘤2个。直径1～3mm 12个,3.5～5.5mm 7个,8mm 2个,12～25mm 3个,26mm 2个,40mm 1个。微小动
The aneurysm that passes through the dura mater at the internal carotid artery (ICA) is called JDRAn and is roughly divided into an intradural aneurysm and an epidural aneurysm. To understand the positional relationship between the 3D-CTA and the cavernous sinus, and to determine the diagnostic value of the aneurysm in the epidural and extracranial extensions, 27 cases of JDRAn from 23 cases diagnosed by MRA, DSA, and surgery were studied. Among them, 12 cases were single and 11 cases were multiple. Unruptured aneurysms occurred in 21 cases, ruptured in 1 case, and fractured and unruptured in 1 case. There were 17 epidural aneurysms, 8 epidurals, and 2 epidural and aneurysmal aneurysms. There are 12 diameters 1 to 3mm, 7 pieces of 3.5 to 5.5mm, 2 pieces of 8mm, 3 pieces of 12 to 25mm, 2 pieces of 26mm, and 1 piece of 40mm. Micromotion