Hansel NH, et al. – This study was undertaken to compare the diagnostic quality of time–of–flight magnetic resonance angiography (TOF–MRA) and metal–artefact–reduction (MAR) flat–panel–detector computed tomography angiography (FPCTA) and to determine the imaging technique best suited for evaluation endovascular and surgically treated aneurysms. The results confirmed that metal–artefact–reduction–panel–detector computed tomography angiography is significantly better suited for follow–up examinations of clipped aneurysms, whereas for larger coil packages TOF–MRA is preferable. KKn addition, smaller coil packages can be evaluated applying MAR–FPCTA or TOF–MRA.