Mannheim carotid intima-media thickness and plaque consensus (2004-2006-2011). An update on behalf of the advisory board of the 3rd, 4th and 5th watching the risk symposia, at the 13th, 15th and 20th European Stroke Conferences, Mannheim, Germany, 2004, Brussels, Belgium, 2006, and Hamburg, Germany, 2011.
Level 5 - mechanism / opinion, no new human data
Expert consensus statement without original empirical data
PubMed 23128470 · doi:10.1159/000343145
What was done
An expert advisory board updated the Mannheim consensus guidelines across meetings in 2004, 2006, and 2011 to establish standardized ultrasound methodology, technical standards, and definitions for carotid intima-media thickness (IMT) and carotid plaque measurement in clinical trials, epidemiological research, and clinical practice.
What was found
The consensus defines carotid artery plaque as a focal structure encroaching into the arterial lumen by at least 0.5 mm, by 50% of the surrounding IMT value, or having a thickness >1.5 mm measured from the media-adventitia interface to the intima-lumen interface. It established criteria to differentiate early plaque formation from IMT thickening to harmonize data collection across trials. The document explicitly recommends against serial IMT monitoring in individual clinical patients. No empirical numerical trial data or effect sizes are reported in the abstract.
Why it matters
It provides standard ultrasound criteria for defining carotid plaque and IMT to enable cross-study comparison and meta-analyses in cardiovascular research. It also sets clear boundaries by discouraging serial IMT tracking for individual patient management.
Limits
This publication is an expert consensus document and narrative guideline rather than an empirical trial or systematic review. The abstract provides no primary human subject data, validation statistics, or inter-rater reliability metrics.
Cited by
- contradicts A measurement of 1.3 mm or higher on a carotid intima-media thickness (CIMT) test is classified as discrete plaque.