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Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...
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Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
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Related Experiment Video

Updated: Feb 23, 2026

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
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[Diagnosis of multiple sclerosis].

Chih-Chao Yang1

  • 1Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan. jesse@ha.mc.ntu.edu.tw

Acta Neurologica Taiwanica
|January 24, 2006
PubMed
Summary

Diagnosing multiple sclerosis (MS) is crucial for timely treatment. The McDonald criteria, incorporating MRI, aim to speed up diagnosis but have introduced some confusion and require further validation in diverse populations.

Area of Science:

  • Neurology
  • Immunology
  • Neuroscience

Context:

  • Multiple sclerosis (MS) is a complex inflammatory demyelinating autoimmune disease of the central nervous system.
  • Clinical heterogeneity of MS can present diagnostic challenges.
  • The availability of disease-modifying treatments necessitates accurate and timely diagnosis.

Purpose:

  • To review the evolution of diagnostic criteria for multiple sclerosis.
  • To emphasize the significance and application of the McDonald criteria.
  • To discuss the role of MRI in diagnosing MS, particularly dissemination in space and time.

Summary:

  • Diagnostic principles for MS have evolved from clinical assessment (Schumacher, Poser criteria) to incorporating advanced imaging.
  • The McDonald criteria (2001) represent a significant advancement by integrating standardized MRI findings, allowing for earlier diagnosis based on dissemination of demyelination.

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  • While the McDonald criteria enhance diagnostic sensitivity, they also introduce complexities and require validation in specific populations, such as Asian MS patients.

    • Impact:

    • Facilitates earlier diagnosis of MS, enabling prompt initiation of disease-modifying therapies.
    • Highlights the diagnostic utility and controversies surrounding MRI in MS diagnosis.
    • Underscores the need for ongoing research and validation of diagnostic criteria across diverse ethnic groups.