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A Pictorial Essay of Brain Perfusion‐CT: Not Every Abnormality Is a Stroke!
Author(s) -
Keedy Alexander,
Soares Bruno,
Wintermark Max
Publication year - 2012
Publication title -
journal of neuroimaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 64
eISSN - 1552-6569
pISSN - 1051-2284
DOI - 10.1111/j.1552-6569.2012.00716.x
Subject(s) - medicine , perfusion , perfusion scanning , stroke (engine) , parenchyma , abnormality , radiology , ischemic stroke , acute stroke , cardiology , ischemia , pathology , mechanical engineering , psychiatry , tissue plasminogen activator , engineering
Perfusion‐CT (PCT) of the brain is a rapidly evolving imaging technique used to assess blood supply to the brain parenchyma. PCT is readily available at most imaging centers, resulting in steadily increasing use of this imaging technique. Though PCT was initially introduced and still most widely used to evaluate patients with acute ischemic stroke, a wide variety of other pathologic processes demonstrate abnormal perfusion maps. Therefore, it is important for the radiologist to recognize altered perfusion patterns observed in diseases other than typical ischemic stroke. The goal of this article is to show the perfusion maps and review the perfusion patterns observed in some subtypes of atypical stroke and in neurological entities other than stroke, so that they are recognized and not confused with the PCT patterns observed in patients with typical ischemic stroke.