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White matter hyperintensity shape is associated with long-term dementia risk

  • Jasmin Annica Keller
  • , Sigurdur Sigurdsson
  • , Kelly Klaassen
  • , Lydiane Hirschler
  • , Mark A. van Buchem
  • , Lenore J. Launer
  • , Matthias J.P. van Osch
  • , Vilmundur Gudnason
  • , Jeroen H.J.M. de Bresser

Research output: Contribution to journalArticlepeer-review

Abstract

INTRODUCTION: We aimed to investigate the association between white matter hyperintensity (WMH) shape and volume and the long-term dementia risk in community-dwelling older adults.

METHODS: Three thousand seventy-seven participants (mean age: 75.6 ± 5.2 years) of the Age Gene/Environment Susceptibility (AGES)-Reykjavik study underwent baseline 1.5T brain magnetic resonance imaging and were followed up for dementia (mean follow-up: 9.9 ± 2.6 years).

RESULTS: More irregular shape of periventricular/confluent WMH (lower solidity (hazard ratio (95% confidence interval) 1.34 (1.17 to 1.52), p < .001) and convexity 1.38 (1.28 to 1.49), p < .001); higher concavity index 1.43 (1.32 to 1.54), p < .001) and fractal dimension 1.45 (1.32 to 1.58), p < .001)), higher total WMH volume (1.68 (1.54 to 1.87), p < .001), higher periventricular/confluent WMH volume (1.71 (1.55 to 1.89), p < .001), and higher deep WMH volume (1.17 (1.08 to 1.27), p < .001) were associated with an increased long-term dementia risk.

DISCUSSION: WMH shape markers may in the future be useful in determining patient prognosis and may aid in patient selection for future preventive treatments in community-dwelling older adults.

Original languageEnglish
Pages (from-to)5632-5641
Number of pages10
JournalAlzheimer's and Dementia
Volume19
Issue number12
DOIs
Publication statusPublished - Dec 2023

Bibliographical note

Funding Information: The authors want to thank Myriam Jaarsma‐Coes for her help with the software. The Age, Gene/Environment Susceptibility‐Reykjavik Study was supported by NIH contracts N01‐AG‐1‐2100 and HHSN27120120022C, the NIA Intramural Research Program, Hjartavernd (Icelandic Heart Association), and Althingi (Icelandic Parliament). This work was supported by an Alzheimer's Nederland grant (WE.03‐2019‐08) to Jeroen de Bresser. Publisher Copyright: © 2023 The Authors. Alzheimer's & Dementia published by Wiley Periodicals LLC on behalf of Alzheimer's Association.

Other keywords

  • cerebral small vessel disease
  • cognitive decline
  • dementia
  • magnetic resonance imaging
  • white matter hyperintensities

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