Diagnostic evaluation and quality control of intracranial aneurysm with multi-slice CT angiography

Objective To evaluate the values and quality control of multislice CT angiography (MSCTA) in the diagnosis of cerebral aneurysms.Methods MSCTA were performed in 27 patients with cerebral aneurysms confirmed by DSA and operation.CTA were processed with maximum intensity projection ( MIP ) , volume rendering (VR) and curved planar reformation (CPR).8 cases were performed DSA and 19 cases were performed operation.Results All the cases are solitary.24 cerebral aneurysms in 27 patients were found in MSCTA, 10 aneurysms were in the middle cerebral artery, 7 in the anterior cerebral artery, 4 in the posterior cerebral artery, 4 in the internal carotid artery and 1 in the vertebral artery.3 aneurysms in the internal carotid artery were missed on the MSCTA.The diameter were between 5～22 mm on MSCTA images.The location, size and appearance of cerebral aneurysms showed in MSCTA images were in accordant with the result of DSA and operations.Conclusion MSCTA can display clearly the location, size and appearance of cerebral aneurysms accurately and objectively, and provide valuable information for surgery or interventional therapy.