Differentiation of recent and old cerebral infarcts by diffusion-weighted MRI.
We performed MRI, including diffusion-weighted imaging, in 15 patients with recurrent strokes with acute ischaemia and at least one old lesion according to the clinical history and/or CT. Routine MRI showed similar signal intensity changes in both situations. Diffusion-weighted images, however, were positive in all acute or subacute infarcts. The high signal of acutely disturbed diffusion due to intracellular oedema could also be identified in small brain stem lesions. Spatial resolution was increased by applying separate gradients in each axis instead of creating anisotropy-independent trace images.
Fitzek
C
C
Department of Neuroradiology, University Hospital, Mainz, Germany.
Tintera
J
J
Müller-Forell
W
W
Urban
P
P
Thömke
F
F
Fitzek
S
S
Hopf
H C
HC
Stoeter
P
P
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology*; D001933:Brain Stem / Q000000981:diagnostic imaging / Q000473:pathology; D002544:Cerebral Infarction / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008526:Medulla Oblongata / Q000000981:diagnostic imaging / Q000473:pathology; D008875:Middle Aged; D012008:Recurrence; D014057:Tomography, X-Ray Computed