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Related Experiment Videos

[Correlation between age and average apparent diffusion coefficient in normal-appearing cerebral white matter].

Xiu-yi Zhao1, Xue-lin Zhang, Jin Wang

  • 1Diagnostic Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.

Di 1 Jun Yi Da Xue Xue Bao = Academic Journal of the First Medical College of PLA
|November 30, 2004
PubMed
Summary
This summary is machine-generated.

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The average apparent diffusion coefficient (ADCav) of normal-appearing white matter slightly increases with age, particularly in individuals over 60 years old. This finding suggests subtle age-related ultrastructural changes in the brain's white matter.

Area of Science:

  • Neuroimaging
  • Biophysics
  • Gerontology

Context:

  • White matter integrity is crucial for cognitive function.
  • Aging is associated with various physiological changes, including alterations in brain tissue microstructure.
  • Diffusion imaging provides quantitative insights into tissue microstructure.

Purpose:

  • To investigate the relationship between aging and the average apparent diffusion coefficient (ADCav) in normal-appearing white matter.
  • To quantitatively assess age-related changes in white matter microstructure using diffusion MRI.

Summary:

  • Fifty patients were categorized into four age groups (16-30, 31-45, 46-60, and >60 years).
  • Diffusion imaging was used to measure ADCav in normal-appearing white matter.
  • A statistically significant increase in ADCav was observed in individuals over 60 years compared to younger groups, indicating increased water diffusivity.

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Impact:

  • This study quantitatively demonstrates a subtle age-related increase in white matter water diffusivity.
  • Findings suggest that aging may be associated with mild ultrastructural changes in human white matter.
  • Results contribute to understanding the neurobiological effects of aging and may inform future research on age-related cognitive decline.