Related Experiment Videos
Abnormalities of cerebral perfusion in multiple sclerosis
W Rashid1, L M Parkes, G T Ingle
1MS NMR Research Unit, Department of Neuroinflammation, Brain Injury and Rehabilitation, Institute of Neurology, University College London, UK.
Journal of Neurology, Neurosurgery, and Psychiatry
|August 18, 2004
Summary
Brain perfusion MRI reveals distinct patterns in multiple sclerosis (MS) subtypes. Progressive MS shows lower grey matter perfusion, while relapsing MS exhibits increased white matter perfusion, suggesting differing disease mechanisms.
Area of Science:
- Neuroimaging
- Medical Physics
- Neurology
Background:
- Perfusion imaging offers insights into brain tissue metabolic activity.
- Multiple sclerosis (MS) studies show altered perfusion in grey matter (GM) and white matter (WM), but patterns across clinical subtypes remain unclear.
Purpose of the Study:
- Investigate perfusion differences in MS clinical subgroups using continuous arterial spin labelling (CASL) MRI.
- Determine if distinct MS subtypes exhibit unique perfusion changes.
- Elucidate potential pathological mechanisms underlying observed perfusion alterations.
Main Methods:
- Compared perfusion in 60 MS patients (relapsing remitting, secondary progressive, primary progressive, benign) and 34 healthy controls.
- Utilized Statistical Parametric Mapping (SPM '99) for regional perfusion analysis in GM and WM.
- Quantified global white matter perfusion via WM segmentation using T(1) relaxation times.
Main Results:
- Primary and secondary progressive MS cohorts showed reduced GM perfusion, notably in the thalamus.
- Relapsing remitting and secondary progressive MS cohorts demonstrated increased WM perfusion.
Conclusions:
- Decreased GM perfusion in progressive MS may indicate neuronal loss or dysfunction.
- Increased WM perfusion in relapsing and progressive MS could signify heightened cellularity and inflammation.
- Further longitudinal studies with advanced imaging techniques are recommended to explore regional/temporal perfusion changes and their clinical correlations.