A pictorial essay of brain perfusion-CT: Not every abnormality is a stroke!

Alexander Keedy, Bruno Soares, Max Wintermark

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)e20-e33
JournalJournal of Neuroimaging
Issue number4
StatePublished - Oct 2012


  • Brain
  • Perfusion CT
  • Stroke

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology


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