Figure 10. (a) Axial colour Doppler image at the level of the proximal aorta. Colour can be seen outside the limits of the stent-graft (arrows), in keeping with endoleak. (b) CT confirms the presence of endoleak with a contrast blush within the aneurysm outside the confines of the stent-graft (curved arrows). (c) Spectral Doppler confirms the presence of arterial flow outside the stent-graft. The arrow points to the Doppler cursor, which is in the aneurysm sac behind the stent-graft.