Abstract
Objective To assess the accuracy of 320-detector volume CTA (VCTA) in the diagnosis of intracranial aneurysms. Methods A total of 462 patients suspected with intracranial aneurysm in the Department of Interventional Radiology, the Third Affiliated Hospital of Soochow University from February 2011 to October 2014 were performed 320-detector VCTA and digital subtraction angiographic (DSA) examinations. Results In 462 patients, 313 patients with intracranial aneurysm were diagnosed by 3D-DSA and a total of 381 intracranial aneurysms were detected. Ten intracranial aneurysms were missed by non-subtracted VCTA and one aneurysm was misdiagnosed. The sensitivity, specificity, and accuracy of non-subtracted VCTA diagnosed 0.05). Conclusions The accuracy of subtracted 320-detector VCTA in the diagnosis of <3 mm intracranial aneurysms is higher. It can be used as the preferred imaging examination for diagnosis of intracranial aneurysms. The non-subtracted 320-detector VCTA relatively easily misses the diagnosis of intracranial aneurysms near the skull. Key words: Intracranial aneurysm; 320-detector volume CT angiography; Angiography, digital subtraction
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