The Carotid Intima-Media Thickness (CIMT) test involves a special ultrasound scan of the carotid arteries in the neck to measure the thickness of the inner two layers – the intima and media. Several clinical studies have demonstrated a correlation between the Carotid Intima-Media Thickness (CIMT) and the future risk of cardiovascular disease. This test can therefore alert the doctor that the patient is at higher risk of a heart attack or stroke, even if the person has no symptoms. Early detection may indicate the need for a more aggressive approach to managing the risk factors associated with heart disease and stroke.