Temporal stability of dysmorphic fusiform aneurysms of the intracranial internal carotid artery

Document Type

Article

Abstract

Purpose: Estimation of the stability of dysmorphic fusiform aneurysms of the intracranial internal carotid artery requires precise monitoring of their volumes. This report describes a method of magnetic resonance (MR) imaging and three-dimensional postprocessing to study the evolution of these aneurysms in a prospective cohort of patients not immediately suitable for surgery or endovascular treatment. Materials and Methods: Ten patients with fusiform aneurysms of the intracranial internal carotid artery underwent serial MR studies. Five patients were studied at two time points and the remainder at multiple time points (mean delay between studies, 12.6 mo ± 3.8). For each patient, studies from all time points were coregistered. The volumes of each vessel component were calculated. Results: Mean aneurysm volume was 833 mm3 ± 878. Mean annual rate of volume progression was 1.37% ± 2.09. All aneurysms were thrombus-free. Conclusions: This study indicates that, given the relatively low rate of progression of dysplastic fusiform aneurysms and the complexity of their shape, three-dimensional quantitative volumetric methods can be helpful in monitoring whether any growth has occurred. © 2011 SIR.

Publication Date

7-1-2011

Publication Title

Journal of Vascular and Interventional Radiology

ISSN

10510443

E-ISSN

15357732

Volume

22

Issue

7

First Page

1007

Last Page

1011

PubMed ID

21419648

Digital Object Identifier (DOI)

10.1016/j.jvir.2011.01.425

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