Increased number of microinfarcts in Alzheimer disease at 7-T MR imaging.

Purpose: To assess the prevalence and number of cortical microinfarcts in patients with Alzheimer disease (AD) by using a 7-T magnetic resonance (MR) imaging system, to assess the independent association of cortical microinfarcts with cognitive dysfunction, and to investigate potential confounding effects of the coexisting presence of cerebral amyloid angiopathy (CAA).

Materials And Methods: The local institutional review board approved this study. In all cases, informed consent was obtained.