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Modification of MRI criteria for multiple sclerosis in patients with clinically isolated syndromes

J K Swanton1, K Fernando, C M Dalton

  • 1NMR Research Unit, 6th Floor, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, UK.

Journal of Neurology, Neurosurgery, and Psychiatry
|July 27, 2005
PubMed
Abstract

Insights

Modified McDonald criteria improve early multiple sclerosis diagnosis in clinically isolated syndromes (CIS). The enhanced criteria show higher sensitivity and accuracy for detecting dissemination in space and time, aiding earlier detection of definite multiple sclerosis.

Area of Science:

  • Neurology
  • Radiology
  • Clinical Diagnostics

Background:

  • The McDonald criteria, utilizing MRI for dissemination in space and time, aid multiple sclerosis diagnosis in young adults with clinically isolated syndromes (CIS).
  • However, the current McDonald criteria exhibit limited sensitivity for early multiple sclerosis diagnosis.

Purpose of the Study:

  • To compare the diagnostic performance of the standard McDonald criteria versus modified McDonald criteria for assessing the development of clinically definite multiple sclerosis.
  • The study aimed to evaluate enhanced criteria for dissemination in space and time in CIS patients.

Main Methods:

  • Modified McDonald criteria were developed with a less stringent definition for dissemination in space and allowing new T2 lesions at three months as evidence for dissemination in time.
  • Both standard and modified McDonald criteria were applied to 90 CIS patients, with baseline and three-month follow-up MRI scans.

Main Results:

  • Both criteria demonstrated high specificity (>90%) for diagnosing multiple sclerosis.
  • The modified McDonald criteria exhibited significantly higher sensitivity (77% vs. 46%) and accuracy (86% vs. 73%) compared to the standard criteria.

Conclusions:

  • The modified McDonald criteria offer improved diagnostic performance for multiple sclerosis in CIS patients.
  • Further evaluation of these modified criteria in diverse CIS cohorts is recommended.

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