To reliably assess the vessel wall, adequate blood suppression is of high importance. Most black-blood vessel wall MRI sequences rely on flow sensitive signal attenuation. Intra-aneurysmal flow is often chaotic with slower flows near the aneurysm wall. Therefore, certain regions within the aneurysm might be more difficult to suppress. In this study we developed a phantom set-up to evaluate slow flow artefacts in vessel wall MRI of intracranial aneurysms. This setup allows to study the sensitivity of different vessel wall MRI sequences (e.g. DANTE, MSDE, 3D TSE) in relation to specific aneurysm geometries and contrast agent concentrations.