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Related Experiment Videos

Cerebral circulation in the elderly

J S Meyer1, Y Terayama, S Takashima

  • 1Cerebral Blood Flow Laboratory, Veterans Affairs Medical Center, Houston, Texas 77030.

Cerebrovascular and Brain Metabolism Reviews
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

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As the human brain ages, cerebral blood flow (CBF) and metabolism decline, impacting cognitive function and diagnosis of disorders. Advanced imaging techniques help differentiate normal aging from disease-related brain changes.

Area of Science:

  • Neuroscience
  • Gerontology
  • Medical Imaging

Background:

  • Recent advancements in measuring cerebral blood flow (CBF) and metabolism offer insights into the aging human brain.
  • Normal aging is associated with inevitable declines in brain functional metabolism and blood supply.
  • Elderly individuals exhibit reduced tolerance to brain disorders and face diagnostic challenges for cognitive impairments.

Purpose of the Study:

  • To investigate the changes in the aging human brain in both healthy and diseased states.
  • To differentiate age-related alterations in the brain from pathological abnormalities.
  • To explore the utility of advanced imaging techniques in assessing brain aging.

Main Methods:

  • Utilized newer methods for measuring cerebral blood flow (CBF) and metabolism.

Related Experiment Videos

  • Employed computed tomography (CT) densitometry.
  • Integrated xenon-enhanced CT CBF measurements for noninvasive assessment.

    • Main Results:

    • Documented inevitable declines in functional metabolism and blood supply during normal aging.
    • Observed progressive depletion of neuronal and vascular reserves with age.
    • Demonstrated that CT densitometry and xenon-enhanced CT CBF can distinguish normal aging from pathological changes in different brain regions.

    Conclusions:

    • Normal aging leads to reduced brain functional metabolism and blood supply, affecting cognitive function.
    • Neuronal and vascular reserve depletion in aging contributes to cognitive decline.
    • Xenon-enhanced CT CBF provides a noninvasive tool to differentiate normal aging brain changes from disease-related abnormalities.