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Updated: Jun 2, 2026

A Magnetic Resonance Imaging Protocol for Stroke Onset Time Estimation in Permanent Cerebral Ischemia
Published on: September 16, 2017
Clinical applications of diffusion MR imaging for acute ischemic stroke
Albert J Yoo1, R Gilberto González
1Division of Diagnostic and Interventional Neuroradiology, Harvard Medical School, Massachusetts General Hospital, 55 Fruit Street, Gray 241, Boston, MA 02114, USA. ajyoo@partners.org
Diffusion magnetic resonance imaging (dMRI) accurately detects acute ischemic stroke. This review explores its role in guiding reperfusion therapy decisions based on stroke severity and vessel occlusion.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Diffusion magnetic resonance imaging (dMRI) is a leading diagnostic tool for acute ischemic brain injury.
- Its high accuracy in identifying irreversible tissue damage early after stroke is well-established.
- The clinical utility of dMRI hinges on its ability to guide patient management.
Purpose of the Study:
- To review the role of diffusion imaging in evaluating acute ischemic stroke patients.
- To examine how factors like vessel occlusion and clinical deficit influence dMRI's utility.
- To focus on dMRI's impact on decisions regarding reperfusion therapies.
Main Methods:
- Literature review of studies on diffusion imaging in acute ischemic stroke.
- Analysis of how dMRI findings correlate with stroke severity and vessel status.
- Examination of clinical decision-making processes for reperfusion treatments.
Main Results:
- dMRI is crucial for early detection and characterization of ischemic tissue.
- The interpretation of dMRI results is significantly affected by the location and extent of vessel occlusion.
- Clinical deficits provide essential context for dMRI findings in treatment planning.
Conclusions:
- Diffusion imaging plays a pivotal role in the acute stroke management pathway.
- Integrating dMRI data with clinical and vascular information optimizes treatment decisions.
- dMRI is instrumental in guiding the selection of intravenous and intra-arterial reperfusion therapies.
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