What follow up imaging tests do patients treated with EVAR undergo?
Patients require lifelong imaging surveillance to monitor for endoleak, aneurysm expansion, and graft integrity. Imaging follow-up after EVAR is usually performed by periodic contrast-enhanced computed tomography (CT). The typical regimen is a baseline CT study at 1 month, with a follow-up study at 6 months and annually thereafter. To reduce the need for expensive, radiation-exposing serial CT scans, some experts advocate for follow-up via color flow duplex US scanning in the absence of endoleak.