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Assessing Cortical Cerebral Microinfarcts on High Resolution MR Images
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Subcortical ischemic vascular dementia

Helena C Chui1

  • 1Department of Neurology, University of Southern California, Los Angeles, CA 90033, USA. chui@hsc.usc.edu

Neurologic Clinics
|July 31, 2007
PubMed

Insights

Subcortical ischemic vascular dementia (SIVD) is a subtype of cognitive impairment. Research links MRI findings like lacunes and white matter changes to cognitive issues, emphasizing hypertension control.

Area of Science:

  • Neurology
  • Neuroimaging
  • Vascular Cognitive Impairment

Background:

  • Subcortical ischemic vascular dementia (SIVD) is a proposed subtype of vascular cognitive impairment.
  • MRI reveals silent hyperintensities in 20-40% of elderly individuals.
  • The relationship between MRI findings (lacunes, white matter changes) and cognitive impairment is complex.
  • Alzheimer's disease pathology may contribute to cognitive decline with age.

Purpose of the Study:

  • To investigate SIVD using cerebral autosomal dominant arteriopathy with subcortical infarctions and leukoencephalopathy (CADASIL) as a model, free from Alzheimer's pathology.
  • To explore the association between MRI-detected lacunes and white matter changes with cognitive deficits, specifically dysexecutive syndrome.

Main Methods:

  • Utilizing MRI to identify lacunes and white matter changes.
  • Studying patients with CADASIL to model SIVD without confounding Alzheimer's disease.
  • Assessing cognitive function, particularly executive functions.

Main Results:

  • Lacunes and deep white matter changes are associated with dysexecutive syndrome.
  • CADASIL provides a unique model for studying SIVD in the absence of Alzheimer's disease.

Conclusions:

  • Hypertension is a significant risk factor for sporadic SIVD and is treatable.
  • Reducing vascular risk profiles should be a high priority for managing SIVD.
  • Further research is needed to clarify the complex relationship between vascular changes and cognitive impairment.

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