1. A comparison between contrast-enhanced ultrasound imaging and multislice computed tomography in detecting and classifying endoleaks in the follow-up after endovascular aneurysm repair.
- Author
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Gürtler VM, Sommer WH, Meimarakis G, Kopp R, Weidenhagen R, Reiser MF, and Clevert DA
- Subjects
- Adult, Aged, Aged, 80 and over, Endoleak etiology, False Negative Reactions, False Positive Reactions, Female, Humans, Male, Middle Aged, Predictive Value of Tests, Retrospective Studies, Time Factors, Treatment Outcome, Aortic Aneurysm, Abdominal surgery, Aortography methods, Blood Vessel Prosthesis Implantation adverse effects, Contrast Media, Endoleak diagnostic imaging, Endovascular Procedures adverse effects, Multidetector Computed Tomography, Ultrasonography, Doppler, Color
- Abstract
Background: This study compared contrast-enhanced ultrasound (CEUS) imaging and multislice computed tomography (MS-CT) angiography in detecting and classifying endoleaks in the follow-up of patients after endovascular aneurysm repair (EVAR)., Methods: This retrospective study consisted of 171 patients with CEUS imaging and MS-CT angiography follow-up examinations after EVAR. During follow-up, 489 CEUS and 421 MS-CT examinations were assessed. B-scan, color Doppler, and CEUS imaging were performed in all patients. MS-CT was performed with a 16-slice up to 128-slice scanner., Results: From the 132 patients in our cohort, we obtained 200 contemporary imaging examination pairs. MS-CT was used as the preferred examination in determining the presence of an endoleak. The true-positive rate for the detection of endoleaks with CEUS imaging was 42% (84 of 200), the false-positive rate was 4% (8 of 200), the true-negative rate was 52% (105 of 200), and the false-negative rate was 2% (3 of 200). The sensitivity of CEUS imaging was therefore 97%, and the specificity was 93%. The McNemar test value was 0.227, and the κ coefficient was 0.889., Conclusions: CEUS imaging appears to be as good as MS-CT angiography in the detection of endoleaks in the follow-up after EVAR, with the added advantages of no radiation dose and no nephrotoxicity of the contrast agents. A switch of the preferred examination from MS-CT to CEUS imaging should be considered., (Copyright © 2013 Society for Vascular Surgery. Published by Mosby, Inc. All rights reserved.)
- Published
- 2013
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