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Related Experiment Videos

Hyperacute stroke: evaluation with combined multisection diffusion-weighted and hemodynamically weighted echo-planar

A G Sorensen1, F S Buonanno, R G Gonzalez

  • 1Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA.

Radiology
|May 1, 1996
PubMed
Summary

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Robert H. Ackerman, MD, MPH (1935-2018).

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This summary is machine-generated.

Diffusion-weighted (DW) and hemodynamically weighted (HW) magnetic resonance imaging (MRI) can detect acute stroke earlier than conventional MRI or CT scans. These advanced imaging techniques show abnormalities before infarction is visible, aiding in faster diagnosis and treatment.

Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Acute stroke diagnosis relies on timely and accurate imaging.
  • Conventional MRI and CT may not detect early ischemic changes.

Purpose of the Study:

  • To evaluate acute stroke using conventional, diffusion-weighted (DW), and hemodynamically weighted (HW) magnetic resonance (MR) imaging.
  • Compare the sensitivity of these techniques in early stroke detection.

Main Methods:

  • 11 patients with acute hemiparesis underwent conventional, DW, and HW MR imaging within 10 hours of symptom onset.
  • Volumes of DW and HW abnormalities were compared to infarct volumes on follow-up imaging (MR or CT).

Main Results:

  • DW and HW imaging detected abnormalities in 9 out of 11 patients, even when initial CT/MR was normal.

Related Experiment Videos

  • Infarcts were confirmed on follow-up imaging in these 9 patients.
  • DW abnormalities were generally smaller, while HW abnormalities were larger than final infarct volumes.

    • Conclusions:

    • DW and HW imaging depict hyperacute cerebral ischemia before infarction is visible on conventional MR or CT.
    • These advanced MR techniques show promise for improving early stroke diagnosis.
    • Potential to advance stroke treatment strategies through earlier detection.