Variability of ascending aorta diameter measurements as assessed with electrocardiography-gated multidetector computerized tomography and computer assisted diagnosis software.

Details

Serval ID
serval:BIB_415375FBFCF3
Type
Article: article from journal or magazin.
Collection
Publications
Title
Variability of ascending aorta diameter measurements as assessed with electrocardiography-gated multidetector computerized tomography and computer assisted diagnosis software.
Journal
Interactive cardiovascular and thoracic surgery
Author(s)
Lu T.L., Rizzo E., Marques-Vidal P.M., Segesser L.K., Dehmeshki J., Qanadli S.D.
ISSN
1569-9285 (Electronic)
ISSN-L
1569-9285
Publication state
Published
Issued date
02/2010
Peer-reviewed
Oui
Volume
10
Number
2
Pages
217-221
Language
english
Notes
Publication types: Comparative Study ; Journal Article
Publication Status: ppublish
Abstract
Recently, morphometric measurements of the ascending aorta have been done with ECG-gated multidector computerized tomography (MDCT) to help the development of future novel transcatheter therapies (TCT); nevertheless, the variability of such measurements remains unknown. Thirty patients referred for ECG-gated CT thoracic angiography were evaluated. Continuous reformations of the ascending aorta, perpendicular to the centerline, were obtained automatically with a commercially available computer aided diagnosis (CAD). Then measurements of the maximal diameter were done with the CAD and manually by two observers (separately). Measurements were repeated one month later. The Bland-Altman method, Spearman coefficients, and a Wilcoxon signed-rank test were used to evaluate the variability, the correlation, and the differences between observers. The interobserver variability for maximal diameter between the two observers was up to 1.2 mm with limits of agreement [-1.5, +0.9] mm; whereas the intraobserver limits were [-1.2, +1.0] mm for the first observer and [-0.8, +0.8] mm for the second observer. The intraobserver CAD variability was 0.8 mm. The correlation was good between observers and the CAD (0.980-0.986); however, significant differences do exist (P<0.001). The maximum variability observed was 1.2 mm and should be considered in reports of measurements of the ascending aorta. The CAD is as reproducible as an experienced reader.

Keywords
Adult, Aged, Aged, 80 and over, Aorta/pathology, Aortography/methods, Electrocardiography, Female, Humans, Male, Middle Aged, Observer Variation, Predictive Value of Tests, Radiographic Image Interpretation, Computer-Assisted, Reproducibility of Results, Tomography, X-Ray Computed
Pubmed
Web of science
Open Access
Yes
Create date
11/01/2010 8:48
Last modification date
20/08/2019 13:41
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