Angiography for Imaging of Unruptured Cerebral Aneurysms: A Hospital-Based Prevalence

. These authors contributed equally to this work. Background and Purpose: Contrast enhanced MRA (CE-MRA) can help to overcome the limitations of other techniques to clearly display the details of cerebral aneurysms at 1.5-T MR system. We investigated the prevalence of unruptured cerebral aneurysms (UCAs) using three dimensional (3D) CE-MRA in a tertiary comprehensive hospital in China. Materials and Methods: The cases were prospectively recorded at our hospital between February 2009 and October 2010. 3D CE-MRA, interpreted by 2 observers blinded to the participants ’ information, was used to identify the location and size of UCAs and to estimate the overall, age-specific, and sex-specific prevalence