Interest of a Post-operative Ultrasound With Systematic Use of Ultrasonic Contrast in the Follow-up of Aortic Endoprosthesis: Prospective Study at the University Hospital of Nice

"During this unique visit they will benefit from 2 imaging exams performed by two different operators:~* Echo-doppler without standard method contrast injection (common practice)~* An echo-doppler with Sonovue® ultrasound injection Ultra\_evar method (2.5 ml bolus 2-3 seconds) During this examination, the endoprosthesis and the aneurysm sac will be scanned according to the 4 incidences described above in order to objective whether or not there is a endoleak.~The patient then performs the control CT-scan prior to discharge from hospital.~The results of the medical imaging exams will be communicated to them before the hospital discharge, once the CT-scan has been performed.~A cross-review of the studies will be performed later."