Fig.1.

Size distribution of the detection ratio of CMIs with postmortem 3T MRI. With only CAA or CAA complicated with Lewy body disease or Alzheimer’s disease, the positive ratio of CMIs is almost the same. CMIs of about 2 mm were detected with 3T postmortem MRI, but those less than 1 mm could not be detected. Between 1 and 2 mm, the environmental topography around CMIs in the cerebral gyrus determined whether or not they could be detected. CMIs that were located in complex cortical regions tended to be undetectable.