Sixty-four-row multisection CT angiography for detection and evaluation of ruptured intracranial aneurysms: interobserver and intertechnique reproducibility.

Details

Serval ID
serval:BIB_CF75670F20E0
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Sixty-four-row multisection CT angiography for detection and evaluation of ruptured intracranial aneurysms: interobserver and intertechnique reproducibility.
Journal
AJNR. American Journal of Neuroradiology
Author(s)
Lubicz B., Levivier M., François O., Thoma P., Sadeghi N., Collignon L., Balériaux D.
ISSN
0195-6108 (Print)
ISSN-L
0195-6108
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
28
Number
10
Pages
1949-1955
Language
english
Notes
Publication types: Journal Article Publication Status: ppublish
Abstract
BACKGROUND AND PURPOSE: The purpose of this work was to assess intertechnique and interobserver reproducibility of 64-row multisection CT angiography (CTA) used to detect and evaluate intracranial aneurysms.
MATERIALS AND METHODS: From October 2005 to November 2006, 54 consecutive patients with nontraumatic subarachnoid hemorrhage (SAH) underwent both CTA and digital substraction angiography (DSA). Four radiologists independently reviewed CT images, and 2 other radiologists reviewed DSA images. Aneurysm diameter (D), neck width (N), and the presence of a branch arising from the sac were assessed.
RESULTS: DSA revealed 67 aneurysms in 48 patients and no aneurysm in 6 patients. Mean sensitivity and specificity of CTA for the detection of intracranial aneurysms were, respectively, 94% and 90.2%. For aneurysms less than 3 mm, CTA had a mean sensitivity of 70.4%. Intertechnique and interobserver agreements were good for the detection of aneurysms (mean kappa = 0.673 and 0.732, respectively) and for the measurement of their necks (mean kappa = 0.753 and 0.779, respectively). Intertechnique and interobserver agreements were excellent for the measurement of aneurysm diameters (mean kappa = 0.847 and 0.876, respectively). In addition, CTA was accurate in determining the N/D ratio of aneurysms and adjacent arterial branches. However, the N/D ratio was overestimated by all of the readers at CTA.
CONCLUSION: Sixty-four-row multisection CTA is an imaging method with a good interobserver reproducibility and a high sensitivity and specificity for the detection and the morphologic evaluation of ruptured intracranial aneurysms. It may be used as an alternative to DSA as a first-intention imaging technique in patients with SAH.
Keywords
Adolescent, Adult, Aged, Aged, 80 and over, Aneurysm, Ruptured/radiography, Angiography, Digital Subtraction, Cerebral Angiography, Female, Humans, Intracranial Aneurysm/radiography, Male, Middle Aged, Observer Variation, Predictive Value of Tests, Reproducibility of Results, Sensitivity and Specificity, Tomography, X-Ray Computed
Pubmed
Web of science
Open Access
Yes
Create date
20/01/2008 18:35
Last modification date
20/08/2019 16:49
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