This 45 year-old woman noticed
the sudden onset of right body weakness and trouble speaking at about 400 PM.
At the hospital, Roentgen-ray CT was normal, and the conventional T2-weighted
MR image acquired 8 hours after onset of symptoms showed only subtle changes,
appreciated only in retrospect. Please see below tour of brain image.
This is a tour of brain images
from a 45 year-old woman who noticed the sudden onset of right body weakness
and trouble speaking at about 400 PM. At the hospital, Roentgen-ray CT was normal,
and the conventional T2-weighted MR image acquired 8 hours after onset of
symptoms showed only subtle changes, appreciated only in retrospect.
Diffusion-weighted MR (below) showed
a large area of abnormal signal in the region clinically suspected: the portion
of left hemisphere supplied by the middle cerebral artery. It is important to
note that the method of diffuson imaging shown here does not require
specialized hardware. For details of the method, see published abstract
describing the line scan diffusion method.
