carotid intima-media thickness
Also written as: CIMT — carotid intima-media thickness
An ultrasound measurement of the arterial wall thickness in the carotid arteries, used as a marker of subclinical atherosclerosis and cardiovascular risk stratification.
Full Definition
Carotid intima-media thickness (CIMT) is a non-invasive ultrasound measurement that assesses the combined thickness of the intimal and medial layers of the carotid artery wall. Normal CIMT values are typically <0.9 mm, with measurements >1.0 mm considered abnormal and indicative of subclinical atherosclerosis. CIMT measurement can help reclassify patients from intermediate to high cardiovascular risk, potentially influencing treatment decisions. The test is particularly valuable in asymptomatic individuals where traditional risk factors may not fully capture atherosclerotic burden. Progressive increase in CIMT over time may indicate accelerated atherosclerosis despite medical therapy.
Usage
Usage note: Hyphenate 'intima-media' when used as a compound modifier; CIMT is the standard abbreviation.
In Context
- "The patient's carotid intima-media thickness of 1.2 mm reclassifies her from intermediate to high cardiovascular risk." — cardiovascular risk assessment
- "Annual carotid intima-media thickness monitoring showed progression despite optimal medical therapy." — follow-up examination report