Diagnostic Performance of Computed Tomography Angiography for the Detection of Intracranial Ruptured Aneurysms in Patients with Spontaneous Subarachnoid Hemorrhage: Compared with Digital Subtraction Angiography

Key Points

• Evaluate the diagnostic performance of computed tomography (CT) angiography in detecting ruptured intracranial aneurysms compared to digital subtraction angiography.
• Patients with spontaneous subarachnoid hemorrhage were evaluated using both CT angiography and digital subtraction angiography.
• Comparison of diagnostic accuracy between the two imaging techniques was conducted.
• Statistical analyses were performed to assess the sensitivity and specificity of CT angiography.
• CT angiography demonstrated high sensitivity and specificity for detecting ruptured aneurysms, closely matching digital subtraction angiography results.
• The positive predictive value of CT angiography was found to be over 90%, suggesting it as a reliable diagnostic tool.
• Statistical analysis showed no significant difference in aneurysm detection between CT and digital subtraction angiography (p=0.05).