颅内动脉瘤是神经科的常见多发病,是引起蛛网膜下腔出血的最常见原因,动脉瘤一旦破裂,其致死率、致残率很高。因此,早期作出正确诊断并给予及时治疗对于降低病死率及改善患者预后具有重要的临床意义。CT血管造影、磁共振血管造影、数字减影血管造影在颅内动脉瘤的诊断中各具优势和不足,应结合患者病情和临床实际合理选用各项检查。 Intracranial aneurysm is a common and frequently occurring neurological department, is the most common cause of subarachnoid hemorrhage. Once a ruptured aneurysm, its mortality and disability are high. Therefore, to make a correct diagnosis early and give timely treatment for reducing mortality and improve the prognosis of patients with important clinical significance. CT angiography, magnetic resonance angiography, digital subtraction angiography in the diagnosis of intracranial aneurysms have their own advantages and disadvantages, should be combined with the patient’s condition and clinical reasonable selection of the various tests.