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CT-based Techniques for Brain Perfusion.

Pradeep Krishnan1, Amanda Murphy, Richard I Aviv

  • 1*Division of Neuroradiology, Department of Medical Imaging, University of Toronto and Sunnybrook Health Sciences Centre †Diagnostic Imaging, The Hospital for Sick Children ‡Division of Neuroradiology, Department of Medical Imaging, University of Toronto and Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.

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Summary
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Computed tomography perfusion (CTP) is vital for acute ischemic stroke management. This neuroimaging technique rapidly assesses brain tissue, guiding treatment decisions for better patient outcomes.

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Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Endovascular treatments for acute ischemic stroke have advanced rapidly.
  • Neuroimaging, particularly multimodal CT, is critical for stroke triage and management.
  • Clinical decisions increasingly consider cerebral physiology and time-sensitive metrics.

Purpose of the Study:

  • To highlight the role of CT perfusion in acute ischemic stroke management.
  • To explain how CT perfusion assesses salvageable tissue, infarct core, and cerebral physiology.
  • To discuss the evolving importance of CT perfusion in stroke imaging strategies.

Main Methods:

  • Utilizing multimodal computed tomography (CT), specifically CT perfusion.
  • Assessing changes in cerebral physiology and time-based matrices.
  • Identifying salvageable tissue at risk and infarct core.

Main Results:

  • CT perfusion offers a rapid and practical method for stroke assessment.
  • It aids in understanding physiological changes in the brain.
  • CT perfusion is becoming central to imaging-based acute ischemic stroke management.

Conclusions:

  • CT perfusion plays a crucial role in the rapid management of acute ischemic stroke.
  • Despite challenges in standardization and quantitative accuracy, its utility is growing.
  • It is a cornerstone for imaging-based strategies in acute stroke care.