Affiliations: Institute for Clinical Radiology, Interdisciplinary ultrasound center, Ludwig-Maximilians-University Hospital Munich-Grosshadern, Germany
Correspondence:
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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: [email protected].
Note: [1] Shared first-authorship.
Abstract: PURPOSE: To compare the value of a portable ultrasound system and a high end ultrasound system in detection of endoleaks after EVAR. MATERIAL AND METHODS: In this retrospective study, a cohort of 25 patients underwent both standard examination using a portable ultrasound system (Philips VISIQ) and a second examination using a high end ultrasound system (Philips EPIQ 7). The examination included B-mode and color Doppler in detection of endoleaks. Additional the maximum diameter of the aneurysm was measured in two planes (right-left and ventral-dorsal). The gold standard was contrast-enhanced ultrasound (CEUS) in detection of endoleaks. RESULTS: 25 patients were included in the study. Patients were predominantly male (n = 23) with an average age of 73,30±7.82 years (range 54–85). Diameters of the treated aneurysms were in the right-left plane 5,32±1.88 cm and ventral-dorsal 4,99±1.78 cm using the high end system. Diameters of the treated aneurysms were in the right-left plane 5,30±1.82 cm and ventral-dorsal 4,87±1.74 cm using portable ultrasound system. In 80% of the cases CEUS could detect an endoleak. Whereas the high end system could detect in B-mode 40% and color Doppler 45% of the cases an endoleak. The portable system could detect in B-mode 30% and in color Doppler 35% of the cases an endoleak. On both systems in B-mode a false positive endoleak was found on the same patient. All high flow endoleaks, which needed intervention, could be detected on all systems. CONCLUSION: The high end ultrasound system does not seem to have an additional advantage in the measurement of the aneurysm diameter. Due to a higher resolution, more endoleaks could be detected in B-mode and color Doppler by using the high end system. The presence of small endoleaks could only be detected by using contrast enhanced ultrasound on an high end ultrasound system. High flow endoleaks could be reliable seen on both systems.
Keywords: Endoleak, EVAR, AAA, CEUS, portable ultrasound system
