Non-enhanced magnetic resonance imaging of unruptured intracranial aneurysms at 7 Tesla: Comparison with digital subtraction angiography. - Wrede KH; Matsushige T; Goericke SL; Chen B; Umutlu L; Quick HH; Ladd ME; Johst S; Forsting M; Sure U; Schlamann M (European radiology, 2017)