Endovascular aortic aneurysm repair (EVAR) is evolving into a viable alternative to open surgical repair for many patients with abdominal and thoracic aortic aneurysms. Endoleak development is a complication of EVAR and represents one of the limitations of this procedure. En-doleaks represent blood flow outside the stent-graft lu-men but within the aneurysm sac. Lifelong imaging sur-veillance of patients after EVAR is critical to detect endoleaks for the patients benefit and to determine the long-term performance of the stent-graft. Although computed tomographic angiography is the most com-monly used examination for imaging surveillance, mag-netic resonance angiography, ultrasonography-, and dig-ital subtraction angiography all have a role in endoleak detection and management. This review will focus on imaging techniques used for endoleak detection and the role imaging surveillance plays in the overall care of the post-EVAR patient.