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目的探讨颅内动脉瘤破裂出血后在其破口周围所形成的假性动脉瘤与真性动脉瘤复合体的DSA影像学特征及分型。方法对50例破裂性动脉瘤采用CT及DSA等影像学检查。结果50个破裂性动脉瘤均表现为出血量不等的SAH,DSA检查均在其破口周围形成假性动脉瘤,其影像特征为在真性动脉瘤腔外可见细小形、圆形或类圆形不规则假性瘤腔,可以根据DSA的影像表现将其分为三型:其中A型(类茶壶型)11例,B型(类葫芦型)27例,C型(类哑铃型)12例。结论颅内动脉瘤破裂出血后在破口周围可以形成假性动脉瘤,这种假性瘤腔与真性瘤腔一起构成了一个特殊的动脉瘤复合体,其影像特征在DSA上可表现为三种类型。
Objective To investigate the DSA features and classification of pseudo aneurysm complex with pseudoaneurysm formed around the rupture after intracranial aneurysm rupture and hemorrhage. Methods 50 cases of ruptured aneurysms using CT and DSA and other imaging studies. Results All 50 ruptured aneurysms showed SAH with different amounts of bleeding. DSA showed pseudoaneurysm around the breach, and its imaging features were small, round, or nearly circular outside the cavity of true aneurysm There are 11 types of type A (teapot type), 27 type B (type gourd type), 12 type C (type of dumbbell type) 12 example. Conclusions The intracranial aneurysm ruptured hemorrhage can form pseudoaneurysm around the breach, which forms a special aneurysm complex with the true tumor cavity. Its image features can be expressed as DSA Kind of type