Neuroanatomical substrates of perivascular space index: a morphometric and tractography study - Report - MDSpire

Neuroanatomical substrates of perivascular space index: a morphometric and tractography study

  • By

  • Xuyang Wang

  • Qin Zhang

  • Peitao Su

  • Wenjing Lu

  • Guoqiang Chen

  • Ping Cui

  • Mao Sheng

  • Shiwu Yin

  • June 19, 2026

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Morphometric and Tractography Investigation of Neuroanatomical Correlates for the Perivascular Space Index

Overview

This study investigates the relationship between the DTI-ALPS index and cortical and white matter metrics in a cohort of 815 healthy participants. Findings reveal significant correlations between the DTI-ALPS index and various morphometric features.

Background

The DTI-ALPS index serves as a noninvasive biomarker for assessing glymphatic function. The study utilizes advanced imaging techniques to elucidate these relationships in a healthy population.

Data Highlights

No numerical data or trial data presented in the source material.

Key Findings

  • Positive correlations were found between the DTI-ALPS index and sulcal depth in specific cortical regions.
  • The DTI-ALPS index positively correlated with fractional anisotropy and negatively with mean diffusivity in key white matter tracts.
  • Structural connectivity was established between identified tracts and cortical regions associated with the DTI-ALPS index.
  • Mean diffusivity in connected tracts positively correlated with regional sulcal depth.

Clinical Implications

Understanding these relationships could aid in the development of imaging biomarkers for assessing glymphatic efficiency.

Conclusion

This research enhances the understanding of the neuroanatomical correlates of the DTI-ALPS index.

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  8. Neuroimaging standards for research into small vessel disease—advances since 2013 - ScienceDirect
  9. Frontiers | Imaging biomarkers of glymphatic system dysfunction in Alzheimer’s disease: a systematic review and meta-analysis with a focus on DTI-ALPS index
  10. Influence of orientation, size and shape of the region of interest in diffusion MRI along perivascular spaces index | Magnetic Resonance Materials in Physics, Biology and Medicine | Springer Nature Link

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