Prediction of hemorrhage in acute ischemic stroke using permeability MR imaging.
Increased risk of hemorrhagic transformation (HT) limits the general use of thrombolytic therapy in acute ischemic stroke (AIS). This study shows that early blood-brain barrier defects in AIS can be assessed by using permeability MR imaging. Significantly increased permeability was found in 3 patients who later hemorrhaged. This method indicates the potential for identifying patients at higher risk of HT and offers the use of physiologic imaging rather than time from onset of symptoms to guide treatment decisions.
Kassner
Andrea
A
Department of Medical Imaging, University of Toronto & UHN (Princess Margaret Hospital), Toronto, Ontario, Canada.
Roberts
Timothy
T
Taylor
Keri
K
Silver
Frank
F
Mikulis
David
D
D001812:Blood-Brain Barrier / Q000503:physiopathology*; D002199:Capillary Permeability; D002560:Cerebrovascular Circulation; D038524:Diffusion Magnetic Resonance Imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted; D020300:Intracranial Hemorrhages / Q000150:complications* / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D020521:Stroke / Q000150:complications* / Q000503:physiopathology