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We applied and investigated the benefits of using kt-GRAPPA accelerated dual-venc 4D flow MRI in five patients who presented with cerebral aneurysm between 4 and 12mm (smallest and largest dimension). Velocity values were systematically compared with the high-venc-only part of the same acquisition using correlation and histogram analysis. Blood flow was visualized with streamlines and quality was visually assessed. Results show that dual-venc 4D flow MRI provides refined information on slow flow and recirculating flow in cerebral aneurysms. Future studies will assess the feasibility of advanced hemodynamic measures obtained from dual-venc 4D flow MRI as predictive imaging biomarkers.