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Updated: Jul 18, 2026

Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
Volume reduction in cerebral blood flow in patients with vascular dementia
Insights
Cerebral blood flow is significantly reduced in patients with vascular dementia compared to healthy individuals. Colour duplex sonography reveals lower global cerebral blood flow in this patient group.
Area of Science:
- Neurology
- Vascular Medicine
- Medical Imaging
Background:
- Vascular dementia is a common cause of cognitive decline.
- Cerebral blood flow (CBF) is crucial for brain function.
- Assessing CBF can aid in understanding dementia pathophysiology.
Discussion:
- Colour duplex sonography of extracranial arteries is a non-invasive method to evaluate CBF.
- Reduced global CBF may be a contributing factor or consequence of vascular dementia.
- This finding highlights potential targets for therapeutic interventions.
Key Insights:
- Patients with vascular dementia exhibit significantly lower global cerebral blood flow.
- Extracranial arterial sonography demonstrates this reduction effectively.
- Age- and sex-matched healthy individuals serve as a crucial control group.
Outlook:
- Further research is needed to explore the causal relationship between reduced CBF and vascular dementia.
- Investigating the potential of therapies aimed at improving CBF in vascular dementia patients.
- Longitudinal studies could track CBF changes and disease progression.
Abstract:
Global volume of cerebral blood flow as measured by colour duplex sonography of the extracranial cerebral arteries is much lower in patients with vascular dementia than in healthy individuals matched for age and sex.
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