Magnetic resonance imaging and clinical relationships in multiple sclerosis
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Abstract:
Magnetic resonance imaging (MRI) was done in 109 patients with suspected demyelinating disease (56 with clinical multiple sclerosis [MS] and 53 without). Of those with clinical MS, 43 (77%) had multifocal lesions of the white matter detected on MRI; 12 of the 43 also had confluent periventricular signaling. Nine patients (17%) without clinical MS had similar findings. Of the 56 patients with MS, 35 underwent both computed tomography (CT) and MRI. In this group, 80% of MRI scans showed multiple demyelinating lesions compatible with MS, as compared with 29% of the CT scans. A CT scan was "positive" more often if obtained within 1 month after an attack of MS than later. In contrast, the sensitivity of MRI or the number of lesions detected by MRI did not increase in patients with recent exacerbations. MRI was "positive" in patients with clinical MS more often than was any single evoked response study. In statistical analyses, both the sensitivity of MRI and the number of lesions were associated with the duration of MS. A pattern of confluent periventricular signaling around the lateral ventricle was associated with greater duration of MS and patient disability.
Insights
Magnetic resonance imaging (MRI) is more effective than computed tomography (CT) in detecting white matter lesions in patients with suspected multiple sclerosis (MS). MRI findings correlate with MS duration and patient disability.
Area of Science:
- Neurology
- Radiology
- Neuroimaging
Background:
- Demyelinating diseases, such as multiple sclerosis (MS), are characterized by lesions in the central nervous system.
- Accurate detection and characterization of these lesions are crucial for diagnosis and management.
Purpose of the Study:
- To compare the diagnostic utility of magnetic resonance imaging (MRI) and computed tomography (CT) in patients with suspected demyelinating disease.
- To investigate the relationship between MRI findings, disease duration, and patient disability in multiple sclerosis.
Main Methods:
- 109 patients with suspected demyelinating disease underwent MRI; 56 had clinical multiple sclerosis (MS).
- 35 MS patients also underwent computed tomography (CT) for comparison.
- MRI and CT findings were analyzed for lesion detection and correlation with clinical data.
Main Results:
- MRI detected multifocal white matter lesions in 77% of patients with clinical MS, compared to 29% detection rate for CT scans.
- MRI sensitivity was not affected by recent exacerbations, unlike CT.
- MRI findings, including confluent periventricular signaling, correlated with longer MS duration and increased patient disability.
Conclusions:
- MRI is a more sensitive tool than CT for detecting demyelinating lesions in suspected MS.
- MRI findings provide valuable prognostic information regarding disease duration and disability in MS patients.