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Diffusion-weighted MRI in acute subcortical infarction

M B Singer1, J Chong, D Lu

  • 1Department of Radiology, Mount Sinai School of Medicine, New York, NY 10029, USA.

Stroke
|January 28, 1998
PubMed
Summary
This summary is machine-generated.

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Diffusion-weighted (DW) MRI accurately detects early subcortical infarction. This advanced imaging technique effectively distinguishes acute from nonacute lesions, aiding in patient management.

Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Conventional imaging methods often fail to detect early subcortical cerebral infarction.
  • There is a need for more sensitive and specific diagnostic tools for acute stroke.

Purpose of the Study:

  • To assess the accuracy of diffusion-weighted (DW) magnetic resonance imaging (MRI) in identifying early subcortical infarction.
  • To evaluate DW MRI's effectiveness in differentiating acute from nonacute subcortical infarctions when conventional MRI shows multiple lesions.

Main Methods:

  • Thirty-nine patients with suspected acute subcortical infarction and 17 controls underwent conventional and DW MRI.
  • Imaging was performed between 7 hours and 4 days post-symptom onset.
  • Experienced neurologists correlated imaging findings with clinical symptoms.

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Main Results:

  • DW MRI demonstrated 94.6% accuracy for detecting acute subcortical infarction.
  • Conventional MRI missed acute infarcts in 4 of 39 cases.
  • DW MRI successfully identified the single acute lesion among multiple nonacute lesions in 24 cases, correlating with symptoms.

Conclusions:

  • DW MRI offers high accuracy for diagnosing acute subcortical infarction.
  • DW MRI is effective in differentiating acute from nonacute subcortical lesions.
  • Findings support DW MRI's utility in guiding stroke patient management and clinical trial selection.