期刊
NATURE REVIEWS NEUROLOGY
卷 6, 期 10, 页码 560-571出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nrneurol.2010.129
关键词
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资金
- Division of Intramural Research of the National Institute of Neurological Disorders and Stroke, NIH
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [ZIANS003043, ZIANS003044, ZIANS003045] Funding Source: NIH RePORTER
Brain imaging provides an objective basis for the clinical inferences that direct individual patient management in the acute stroke setting. A brain CT or MRI scan is required for all patients with suspected stroke or transient ischemic attack. Thrombolytic therapy is arguably the most important aspect of acute stroke management; however, most decisions in acute stroke do not relate to this treatment. Stroke imaging must, therefore, provide information beyond the presence or absence of intracranial hemorrhage (ICH) and early evidence of a large infarct. Noncontrast CT and gradient-recalled echo MRI show comparable accuracy in the diagnosis of acute ICH. Diffusion-weighted MRI is more sensitive than noncontrast CT for differentiation of acute ischemic stroke from nonstroke conditions. Combined multimodal parenchymal, perfusion and vascular imaging with CT or MRI has the potential to identify patients with an ischemic penumbra that might be appropriate for acute reperfusion therapies. MRI identifies a broader range of acute and chronic cerebrovascular pathologies than does CT and, hence, could aid decisions about acute intervention, in-hospital management, and secondary prevention. Here, we present an overview of the diagnostic information that clinicians might gain from CT and MRI in the setting of acute stroke, along with the advantages and disadvantages of these techniques.
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