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Arterial spin-labeled perfusion imaging in acute ischemic stroke

Greg Zaharchuk1

  • 1From the Department of Radiology, Stanford University and Stanford University Medical Center, Stanford, CA.

Stroke
|March 8, 2014
PubMed
Summary

No abstract available in PubMed .

Keywords:
ischemiamagnetic resonance imagingperfusionstroke

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An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
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