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Related Experiment Video

Updated: May 15, 2025

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
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MRI Predictors of Cognitive Function After Lacunar Infarction.

Sara Hassani1, Deborah Koltai2, Timothy J Amrhein3

  • 1Department of Neurology, Division of Stroke and Neurocritical Care, Northwestern Feinberg School of Medicine, Chicago, IL (S.H.).

Stroke
|May 14, 2025
PubMed
Summary
This summary is machine-generated.

White matter disease extent is the only MRI biomarker predicting executive function decline after lacunar infarction (LACI). This finding helps identify patients at risk for post-stroke cognitive impairment.

Keywords:
braincognitionquality of liferegression analysisstroke, lacunar

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Area of Science:

  • Neurology
  • Radiology
  • Neuroscience

Background:

  • Poststroke cognitive impairment significantly impacts disability and quality of life.
  • Lacunar infarction (LACI) is a common cause of stroke, often leading to cognitive deficits.
  • Identifying predictive biomarkers for cognitive impairment after LACI is crucial for patient management.

Purpose of the Study:

  • To evaluate the predictive value of individual and collective magnetic resonance imaging (MRI) biomarkers for cognitive impairment following LACI.
  • To determine if specific MRI findings can forecast the development or severity of cognitive decline after LACI.

Main Methods:

  • Retrospective analysis of 134 patients with acute LACI from the American Stroke Association Bugher Small Vessel Study.
  • Assessed MRI biomarkers included: number/size of lacunes, ventricular size, cerebral atrophy, lesion location, and white matter disease (WMD) extent.
  • Cognitive function assessed using the Montreal Cognitive Assessment (global cognition) and Trail Making Test Part B (executive function). Regression analyses were employed.

Main Results:

  • No significant associations were found between MRI characteristics and global cognition (Montreal Cognitive Assessment).
  • Cerebral atrophy, ventricular size, and WMD extent were initially associated with longer Trail Making Test Part B completion times (executive function).
  • After multivariable adjustment, only the extent of white matter disease (WMD) remained significantly associated with executive function impairment.

Conclusions:

  • The extent of white matter disease (WMD) on MRI is the sole independent predictor of executive function deficits after lacunar infarction.
  • WMD may represent a critical imaging biomarker for identifying LACI patients at higher risk of cognitive impairment, specifically affecting executive functions.