Evaluation of CTA,time-resolved 4D CE-MRA and DSA in the follow-up of an intracranial aneurysm treated with a flow diverter stent: Experience from a single case |
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| Authors: | Georgios Kapsas Caterina Budai Francesco Toni Francesco Patruno Anna Federica Marliani Marco Leonardi Luigi Cirillo |
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| Institution: | 1.Department of Radiology, University Hospital of Alexandroupolis, Greece;2.Department of Radiology, University of Bologna, Italy;3.Department of Neuroradiology, IRCCS Institute of Neurological Sciences of Bologna, Bellaria Hospital, Bologna, Italy;4.Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy |
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| Abstract: | Endovascular treatment of giant, fusiform and dissecting aneurysms with flow diverter stents is becoming more and more popular. However, very few studies on the follow-up have been published. We describe a patient with a dissecting aneurysm of the right vertebral artery treated with flow diverter stent placement. The patient was followed up with CT angiography (CTA), time-resolved contrast-enhanced MR angiography (CE-MRA) and digital subtraction angiography (DSA). CTA had false negative results in two instances, whereas time-resolved CE-MRA and DSA were the most accurate in depicting the residual flow in the aneurysmal sac. However, in the case of DSA the demonstration of residual flow proved quite difficult and required a very thorough examination with oblique projections. Our 2.5-year experience with this patient led us to believe that time-resolved CE-MRA is a valuable tool in the follow-up of flow diverter-treated stents. |
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| Keywords: | Intracranial aneurysm flow diverter digital subtraction angiography CT angiography contrast-enhanced MR angiography |
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