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Related Concept Videos

Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

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Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and...
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Related Experiment Video

Updated: Oct 14, 2025

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model
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Ischemic Penumbra: A Personal View.

Stephen M Davis1, Geoffrey A Donnan1

  • 1Departments of Medicine and Neurology, Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Victoria, Victoria, Australia.

Cerebrovascular Diseases (Basel, Switzerland)
|November 4, 2021
PubMed
Summary
This summary is machine-generated.

The ischemic penumbra concept guides acute stroke therapies, rescuing brain tissue and improving outcomes. Advances in imaging, like CT perfusion, enhance patient selection for reperfusion treatments.

Keywords:
ImagingIschemic strokePenumbra

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Area of Science:

  • Neurology
  • Medical Imaging
  • Stroke Medicine

Background:

  • The ischemic penumbra, defined over 40 years ago, is a cornerstone of acute ischemic stroke therapy.
  • Reperfusion treatments aim to salvage hypoperfused brain tissue, improving clinical outcomes in stroke patients.
  • The authors have witnessed the evolution of penumbral imaging and its clinical application since the 1970s.

Purpose of the Study:

  • To review the historical development and current significance of the ischemic penumbra concept in stroke management.
  • To highlight the evolution of imaging techniques used to identify the penumbra.
  • To discuss future directions for portable and accessible penumbral imaging.

Main Methods:

  • Review of historical data and clinical trial outcomes related to the ischemic penumbra.
  • Evolutionary analysis of imaging modalities from PET to MRI and CT perfusion.
  • Discussion of clinical trials utilizing penumbral imaging for reperfusion therapy selection.

Main Results:

  • Penumbral imaging has evolved significantly, with CT perfusion now predominant for automated case selection.
  • Clinical trials using penumbral imaging have successfully extended treatment windows for thrombolysis and thrombectomy.
  • The penumbral principle is integrated into clinical practice alongside infarct growth patterns.

Conclusions:

  • The ischemic penumbra remains a critical concept in acute stroke care, guiding reperfusion strategies.
  • Advancements in imaging technology have enhanced the identification and utilization of the penumbra.
  • Future innovations aim to make penumbral imaging more accessible, portable, and integrated with AI.