[Imaging of the pathophysiology in acute stroke].
Recent developments in neuroimaging have changed the diagnostic aspect of acute stroke and improved our understanding of stroke pathophysiology. Both diffusion weighted MR imaging and CT are capable of detecting the infarcted volume damaged by cytotoxic edema. However, within six hours of stroke onset, DWI has both higher sensitivity and specificity than CT. Perfusion weighted MR imaging and perfusion CT can identify the tissue at risk surrounding the core of the infarct. CT and MR-angiography contribute important information concerning the intra and extracerebral arteries.
Ashkanian
Mahmoud
M
Arhus Universitetshospital, Arhus Sygehus, Neuroradiologisk Forskningsenhed/Center for Funktionelt Integrativ Neurovidenskab og Neuroradiologisk Afdeling, Arhus C. mahmoud@pet.auh.dk
Hjort
Niels
N
Sølling
Christine
C
Gyldensted
Carsten
C
Østergaard
Leif
L
D000208:Acute Disease; D003952:Diagnostic Imaging / Q000379:methods*; D006801:Humans; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D012680:Sensitivity and Specificity; D020521:Stroke / Q000175:diagnosis / Q000378:metabolism / Q000503:physiopathology*; D014057:Tomography, X-Ray Computed