Aneurysms of the anterior and posterior cerebral circulation: comparison of the morphometric featuresReport as inadecuate




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Acta Neurochirurgica

, Volume 156, Issue 9, pp 1647–1654

First Online: 19 July 2014Received: 31 March 2014Accepted: 24 June 2014

Abstract

BackgroundIntracranial aneurysms IAs located in the posterior circulation are considered to have higher annual bleed rates than those in the anterior circulation. The aim of the study was to compare the morphometric factors differentiating between IAs located in the anterior and posterior cerebral circulation.

MethodsA total number of 254 IAs diagnosed between 2009 and 2012 were retrospectively analyzed. All patients qualified for diagnostic, three-dimensional rotational angiography. IAs were assigned to either the anterior or posterior cerebral circulation subsets for the analysis. Means were compared with a t-test. The univariate and stepwise logistic regression analyses were used to determine the predictors of morphometric differences between the groups. For the defined predictors, ROC receiver-operating characteristic curves and interactive dot diagrams were calculated with the cutoff values of the morphometric factors.

ResultsThe number of anterior cerebral circulation IAs was 179 70.5 %; 141 55.5 % aneurysms were ruptured. Significant differences between anterior and posterior circulation IAs were found for: the parent artery size 5.08 ± 1.8 mm vs. 3.95 ± 1.5 mm; p < 0.05, size ratio 2.22 ± 0.9 vs. 3.19 ± 1.8; p < 0.045 and aspect ratio AR 1.91 ± 0.8 vs. 2.75 ± 1.8; p = 0.02. Predicting factors differentiating anterior and posterior circulation IAs were: the AR OR = 2.20; 95 % CI 1.80–270; Is 270 correct or should it be 2.70 and parent artery size OR = 0.44; 95 % CI 0.38–0.54. The cutoff point in the ROC curve was 2.185 for the AR and 4.89 mm for parent artery size.

ConclusionsAspect ratio and parent artery size were found to be predictive morphometric factors in differentiating between anterior and posterior cerebral IAs.

KeywordsAneurysms Morphometry Anterior Posterior circulation  Download fulltext PDF



Author: Tomasz Tykocki - Bogusław Kostkiewicz

Source: https://link.springer.com/







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