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Mannheim intima-media thickness consensus.

P-J Touboul, M G Hennerici, S Meairs

    Cerebrovascular Diseases (Basel, Switzerland)
    |November 4, 2004
    PubMed
    Summary
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    Standardizing intima-media thickness (IMT) measurements is crucial for atherosclerosis research. This consensus defines plaque and recommends IMT use in trials, but not for individual patient monitoring.

    Area of Science:

    • Cardiovascular Medicine
    • Medical Imaging
    • Epidemiology

    Background:

    • Intima-media thickness (IMT) is a key surrogate endpoint in clinical trials for assessing interventions against atherosclerosis.
    • Standardized criteria are needed to differentiate early atherosclerotic plaque from simple IMT thickening.
    • Current IMT measurement protocols lack uniformity, hindering comparative research.

    Purpose of the Study:

    • To establish unified criteria for identifying atherosclerotic plaque.
    • To standardize intima-media thickness (IMT) measurement techniques in vascular research.
    • To provide consensus on the clinical utility of IMT in trials and patient management.

    Main Methods:

    • Consensus-based review of existing literature and clinical trial methodologies.

    Related Experiment Videos

  • Development of precise definitions for atherosclerotic plaque based on lumen encroachment and thickness.
  • Recommendation for standardized IMT measurement protocols in epidemiological and interventional studies.

    • Main Results:

    • A plaque is defined as a focal structure encroaching ≥0.5 mm or 50% into the lumen, or with thickness ≥1.5 mm.
    • Standardized IMT measurement is recommended for all vascular disease trials to enhance population characterization.
    • IMT is not recommended for routine monitoring in individual patients, except in specific cases.

    Conclusions:

    • Standardized IMT measurement will improve data homogeneity and analysis power in vascular studies.
    • Facilitates meta-analyses by enabling the merging of large databases.
    • While IMT is a risk marker, it does not meet criteria for an accepted risk factor.