CT perfusion in acute stroke: Know the mimics, potential pitfalls, artifacts, and technical errors

Rajiv Mangla*, Sven Ekhom, Babak S. Jahromi, Jeevak Almast, Manisha Mangla, Per Lennart Westesson

*Corresponding author for this work

Research output: Contribution to journalReview article

22 Scopus citations

Abstract

The CT perfusion (CTP) imaging of brain has been established as a clinically useful tool in multimodality imaging of acute stroke. All abnormalities seen on perfusion CT are not specifically related to acute infarct. There are many neurologic diseases causing symptoms simulating cerebrovascular disease produce an alteration of brain perfusion and thus can result in perfusion CT abnormalities. There are many pitfalls and artifacts in acquiring the data, calculation of maps and choosing arterial input function. We analyze and classify all these aspects, to allow the technician and the radiologist to know exactly what to avoid and what to choose, and we indicate the way to improve the quality of examination. The knowledge of mimics and pitfalls in acute stroke imaging can be helpful in accurate interpretation of these examinations.

Original languageEnglish (US)
Pages (from-to)49-65
Number of pages17
JournalEmergency Radiology
Volume21
Issue number1
DOIs
StatePublished - Feb 1 2014

Keywords

  • Acute stroke
  • CT perfusion
  • Technical pitfalls

ASJC Scopus subject areas

  • Emergency Medicine
  • Radiology Nuclear Medicine and imaging

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