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| The Application of Dual Energy CTA in the Diagnosis of Intracranial Aneurysms |
| Wujin People’s Hospital of Changzhou City， Changzhou 213002， China |
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Abstract Objective： To investigate the value of dual-energy CT angiography（ CTA） in the diagnosis of intracranial aneurysms. Method： A retrospective analysis was studied about the clinical manifestations of 50 cases of intracranial aneurysms and dual-energy CTA signs， including the volume rendering（ VRT）， the maximum intensity projection（ MIP）. Result： 34 aneurysms were detected out of 50 patients， including 1 anterior cerebral artery aneurysm，9 anterior communicating artery aneurysms， 10 posterior communicating artery aneurysms， 4 intracranial internal carotid artery aneurysms， 9 middle cerebral artery aneurysms， and 9 basilar artery aneurysms. The maximum diameter of the aneurysm was 15 mm. DSA detected 35 ones， and CTA missed an anterior communicating artery aneurysm. Conclusion： Dual energy CTA is a safe， non-invasive， fast imaging method， which can be used as the preferred screening method.
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