Abstract PURPOSE To prospectively evaluate non-contrast-enhanced 7-Tesla(T)MRA for delineation of unruptured intracranial aneurysms(UIAs)in comparison with DSA.MATERIAL AND METHODS Forty patients with single or multiple UIAs were enrolled in this IRB-approved trial.Sequences acquired at 7 T were TOF MRA and non-contrast-enhanced MPRAGE.All patients additionally underwent 3D rotational DSA.Two neuroradiologists individually analysed the following aneurysm and image features on a five-point scale Abstract PURPOSE To prospectively evaluate non-contrast-enhanced 7-Tesla (T) MRA for delineation of unruptured intracranial aneurysms (UIAs) in comparison with DSA. Mechanical and METHODS Forty patients with single or multiple UIAs were enrolled in this IRB-approved trial. Sequences acquired at 7 T were TOF MRA and non-contrast-enhanced MPRAGE. All patients under under 3D rotative DSA. Two neuroradiologists individually analyzed the following aneurysm and image features on a five-point scale