Mueller-Wille, R. and Borgmann, T. and Wohlgemuth, W. A. and Zeman, F. and Pfister, K. and Jung, E. M. and Heiss, P. and Schreyer, A. G. and Krauss, B. and Stroszczynski, C. and Dornia, C. (2014) Dual-energy computed tomography after endovascular aortic aneurysm repair: The role of hard plaque imaging for endoleak detection. EUROPEAN RADIOLOGY, 24 (10). pp. 2449-2457. ISSN 0938-7994, 1432-1084
Full text not available from this repository. (Request a copy)Abstract
To assess the diagnostic accuracy of dual-energy computed tomography (DECT) for detection of endoleaks and aneurysm sac calcifications after endovascular aneurysm repair (EVAR) using hard plaque imaging algorithms. One hundred five patients received 108 triple-phase contrast-enhanced CT (non-contrast, arterial and delayed phase) after EVAR. The delayed phase was acquired in dual-energy and post-processed using the standard (HPI-S) and a modified (HPI-M) hard plaque imaging algorithm. The reference standard was determined using the triple-phase CT and contrast-enhanced ultrasound. All images were analysed separately for the presence of endoleaks and calcifications by two independent readers; sensitivity, specificity and interobserver agreement were calculated. Endoleaks and calcifications were present in 25.9 % (28/108) and 20.4 % (22/108) of images. The HPI-S images had a sensitivity/specificity of 54 %/100 % (reader 1) and 57 %/99 % (reader 2), the HPI-M images of 93 %/92 % (reader 1) and 96 %/92 % (reader 2) for detection of endoleaks. For detection of calcifications HPI-S had a sensitivity/specificity of 91 %/99 % (reader 1) and 95 %/97 % (reader 2), the HPI-M images of 91 %/99 % (reader 1) and 91 %/99 % (reader 2), respectively. Using HPI-M, DECT enables an accurate diagnosis of endoleaks after EVAR and allows distinguishing between endoleaks and calcifications with high diagnostic accuracy. aEuro cent Dual-energy computed tomography allows the diagnosis of aortic pathologies after EVAR. aEuro cent Hard plaque imaging algorithms can distinguish between endoleaks and aneurysm sac calcifications. aEuro cent The modified hard plaque imaging algorithm detects endoleaks with high diagnostic accuracy.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CT; OUTCOMES; Dual-energy computed tomography; Hard plaque imaging; Aortic aneurysm; Endovascular aneurysm repair; Endoleak |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Chirurgie Medicine > Lehrstuhl für Röntgendiagnostik Medicine > Zentren des Universitätsklinikums Regensburg > Zentrum für Klinische Studien |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Aug 2019 11:18 |
| Last Modified: | 13 Aug 2019 11:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9510 |
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