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European Radiology
Published in: European Radiology 9/2004

01-09-2004 | Neuro

Accuracy of CT angiography in the assessment of a fetal origin of the posterior cerebral artery

Authors: A. van der Lugt, T. C. Buter, F. Govaere, D. A. M. Siepman, H. L. J. Tanghe, D. W. J. Dippel

Published in: European Radiology | Issue 9/2004

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Abstract

An uncommon cause of cerebral ischemia in the territory of the posterior cerebral artery (PCA) is the combination of a fetal origin of the PCA and atherosclerotic disease in the internal carotid artery. This study compared the accuracy of CTA with DSA in the assessment of a fetal origin of the PCA. Patients in whom an intracranial DSA and CTA had been performed were reviewed. A fetal origin was defined as a normal-sized patent posterior communicating artery (PCoA) with hypoplasia or aplasia of the ipsilateral P1 segment. One hundred PCAs in 51 patients were analyzed. A fetal origin was present in ten vessels (10%, eight patients). CTA revealed all of them. CTA considered an additional three vessels as having a fetal origin, while DSA revealed a PCoA with the same diameter as the P1 segment of the PCA. Sensitivity and specificity of CTA in the assessment of a fetal origin could be estimated at 100 and 97%, respectively. Positive and negative predictive values were 77 and 100%, respectively. CTA can be considered a valid diagnostic tool for the assessment of a fetal origin of the PCA in patients with a cerebral ischemic event in the territory of the PCA.
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Metadata
Title
Accuracy of CT angiography in the assessment of a fetal origin of the posterior cerebral artery
Authors
A. van der Lugt
T. C. Buter
F. Govaere
D. A. M. Siepman
H. L. J. Tanghe
D. W. J. Dippel
Publication date
01-09-2004
Publisher
Springer-Verlag
Published in
European Radiology / Issue 9/2004
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-004-2333-1

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