Radiological features and clinical diagnosis at early stage of aneurismal subarachnoid hemorrhage

Objective: To investigate the imaging features and the methods of early etiological diagnosis of aneurismal subarachnoid hemorrhage (SAH), and to evaluate their advantages and disadvantages objectively. Methods: We used the imaging examinations such as CT, computed tomography angiography (CTA), MRI, MRA, combination with the history and clinical manifestations to make the early diagnosis of aneurismal SAH in 115 cases. Results: SAH were all early diagnosed in acute bleeding stage (7 days). Among them, 96 cases were diagnosed as aneurysms by DSA examinations in 7 days, the early etiological diagnosis rate was 83.5%; the other 19 cases were diagnosed by secondary DSA after 7 days. In the whole group, there were 9 cases being examined by MRA, 6 patients were diagnosed as aneurysms; 12 cases were examined by CTA, 9 cases were diagnosed as aneurysms. Conclusion: Aneurismal subarachnoid hemorrhage can be etiologically diagnosed at early stage of the disease with CT and DSA. The proposed methods are safe and accurate. They are valuable for early diagnosis and treatment of aneurismal subarachnoid hemorrhage.