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Patterns of enhancing lesion evolution in multiple sclerosis are uniform within patients
A Minneboo1, B M J Uitdehaag, H J Ader
1MR Center for MS Research, VU University Medical Center, Amsterdam, The Netherlands. a.minneboo@vumc.nl
Neurology
|July 13, 2005
Summary
Multiple sclerosis (MS) lesion evolution on MRI is patient-specific, not uniform within individuals. Disease phase and severity influence lesion appearance over time, impacting clinical outcomes.
Area of Science:
- Neuroimaging
- Multiple Sclerosis Research
- Clinical Neurology
Background:
- Histopathology indicates varied lesion development in multiple sclerosis (MS) patients, yet lesions appear similar within individuals.
- The comparable evolution of MS lesions on T1-weighted MRI remains unclear.
Purpose of the Study:
- To assess MS lesion evolution on MRI, comparing within-patient and between-patient variability.
- To investigate the relationship between MRI lesion development and clinical characteristics in MS patients.
Main Methods:
- Studied signal intensity of 789 newly enhancing MS lesions on T1-weighted MRI in 48 patients over 6 months.
- Utilized variance component and multilevel analyses to compare within-patient and between-patient variability in lesion evolution.
- Correlated MRI lesion development with clinical data.
Main Results:
- Between-patient variability in MRI lesion evolution parameters significantly exceeded within-patient variability, confirming a patient-specific phenomenon.
- Hypointense-hypointense lesion evolution patterns were more common in secondary progressive MS than relapsing-remitting MS (OR 4.2).
- Benign MS courses showed more persistent isointense lesions, while aggressive courses had more hypointense lesions.
Conclusions:
- MS lesion evolution on MRI is a patient-specific characteristic.
- The pattern of lesion evolution is influenced by the disease's phase and severity.