Value of high-resolution contrast-enhanced ultrasound in detection and characterisation of endoleaks after EVAR
Issue title: Selected Presentations held at the 33th Annual Conference of the German Society for Clinical Microcirculation and Hemorheology, Villingen-Schwenningen, Germany, 14-15 November, 2014
Affiliations: Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany | Department of Surgery, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany
Note: [] Shared first-authorship.
Note: [] Shared first-authorship.
Note: [] Corresponding author: Dirk André Clevert, MD, Professor of Radiology, Department of Clinical Radiology, Interdisciplinary Ultrasound Center, University of Munich – Grosshadern Campus, Marchioninistr. 15, 81377 Munich, Germany. Tel.: +49 89/44007 3620; Fax: +49 89/44007 8832; E-mail: Dirk.Clevert@med.uni-muenchen.de
Abstract: PURPOSE: To compare the value of high-resolution contrast-enhanced ultrasound in the detection and characterisation of endoleaks after EVAR. MATERIAL AND METHODS: In this retrospective study, a cohort of 80 patients underwent both standard examination using a curved array 5 MHz transducer and a second examination using a curved array 9 MHz transducer. The examination included B-mode, color Doppler and contrast-enhanced ultrasound using the Philips EPIQ 7 scanner. RESULTS: 80 patients were included in the study. CEUS was used as the preferred examination in determining the presence of an endoleak. The sensitivity and specificity for the detection of endoleak using the 5 MHz transducer was: CEUS (96.8%, 100%), Color Doppler (47.6%, 94.1%), B-mode (15.8%, 94.1%), while for the 9 MHz transducer: CEUS (100%, 100%), Color Doppler (39.7%, 94.1%), B-mode (23.8%, 24.1%). CONCLUSION: High resolution ultrasound (9 MHz) in detection and characterization of endoleaks after EVAR has some minor advantages in comparison to lower resolution ultrasound (5 MHz).
Keywords: Endoleak, EVAR, AAA, CEUS, high resolution ultrasound
