Role of Perfusion-Weighted Imaging in a Diffusion-Weighted-Imaging-Negative Transient Ischemic Attack
نویسندگان
چکیده
منابع مشابه
Role of Perfusion-Weighted Imaging in a Diffusion-Weighted-Imaging-Negative Transient Ischemic Attack
BACKGROUND AND PURPOSE The absence of acute ischemic lesions in diffusion-weighted imaging (DWI) in transient ischemic attack (TIA) patients makes it difficult to diagnose the true vascular etiologies. Among patients with DWI-negative TIA, we investigated whether the presence of a perfusion-weighted imaging (PWI) abnormality implied a true vascular event by identifying new acute ischemic lesion...
متن کاملDiffusion-Weighted Imaging and Diagnosis of Transient Ischemic Attack
OBJECTIVE Magnetic resonance (MR) diffusion-weighted imaging (DWI) is sensitive to small acute ischemic lesions and might help diagnose transient ischemic attack (TIA). Reclassification of patients with TIA and a DWI lesion as "stroke" is under consideration. We assessed DWI positivity in TIA and implications for reclassification as stroke. METHODS We searched multiple sources, without langua...
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BACKGROUND AND PURPOSE Among patients presenting with a transient ischemic attack (TIA), some clinical features predispose to recurrent TIA, whereas others predispose to subsequent strokes. We assessed the implication of negative diffusion-weighted imaging on a baseline MRI in predicting subsequent TIA. METHODS We prospectively studied patients presenting in the emergency department within 12...
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BACKGROUND Diagnosing TIA can be difficult, since evidence of brain ischemia is habitually lacking on CT and conventional MR imaging. It has been suggested that patients with acute brain infarction on neuroimaging should be considered stroke cases instead of TIA, regardless of duration of symptoms, implying that optimal diagnostic methods need to be utilized. We therefore postulated that perfus...
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This talk will shed some first light on the two imaging concepts diffusion weighted imaging (DWI) and perfusion weighted imaging (PWI). On the one side one may criticize that for the lecture time given, this will definitely be an incredible or even impossible task: To give sufficient credit to both of these importantant imaging concepts. On the other side one could say: ’Come on, let’s talk abo...
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ژورنال
عنوان ژورنال: Journal of Clinical Neurology
سال: 2017
ISSN: 1738-6586,2005-5013
DOI: 10.3988/jcn.2017.13.2.129