title: Novel use of 4D-CTA in imaging of intranidal aneurysms in an acutely ruptured arteriovenous malformation: is this the way forward?
abstract: Ruptured arteriovenous malformation (AVM) is a frequent cause of intracranial hemorrhage. The presence of associated aneurysms, especially intranidal aneurysms, is considered to increase the risk of re-hemorrhage. We present two cases where an intranidal aneurysm was demonstrated on four-dimensional CT angiography (time-resolved CT angiography) (4D-CTA). These features were confirmed by digital subtraction angiography (catheter arterial angiogram). This is the first report of an intranidal aneurysm demonstrated by 4D-CTA. 4D-CTA can offer a comprehensive evaluation of the angioarchitecture and flow dynamics of an AVM for appropriate classification and management.
authors.affiliation: Department of Neuroradiology, The Walton Centre NHS Foundation Trust, Liverpool, L9 7LJ, UK.
authors.forename: Arun
authors.initials: A
authors.lastname: Chandran
authors.affiliation: Department of Neuroradiology, The Walton Centre NHS Foundation Trust, Liverpool, L9 7LJ, UK.
authors.forename: Mark
authors.initials: M
authors.lastname: Radon
authors.affiliation: Department of Neuroradiology, The Walton Centre NHS Foundation Trust, Liverpool, L9 7LJ, UK.
authors.forename: Shubhabrata
authors.initials: S
authors.lastname: Biswas
authors.affiliation: Department of Neuroradiology, The Walton Centre NHS Foundation Trust, Liverpool, L9 7LJ, UK.
authors.forename: Kumar
authors.initials: K
authors.lastname: Das
authors.affiliation: Department of Neuroradiology, The Walton Centre NHS Foundation Trust, Liverpool, L9 7LJ, UK.
authors.forename: Mani
authors.initials: M
authors.lastname: Puthuran
authors.affiliation: Department of Neuroradiology, The Walton Centre NHS Foundation Trust, Liverpool, L9 7LJ, UK.
authors.forename: Hans
authors.initials: H
authors.lastname: Nahser
mesh_terms: D000328:Adult; D017541:Aneurysm, False / Q000000981:diagnostic imaging; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging / Q000628:therapy; D005260:Female; D056973:Four-Dimensional Computed Tomography; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000628:therapy; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging* / Q000628:therapy; D008297:Male; D012075:Remission, Spontaneous
keywords: Aneurysm; Angiography; Arteriovenous Malformation; CT Angiography; Hemorrhage