APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Carotid bruits are detected in 4% to 5% of the population aged 48 to 80 years and are associated with internal carotid artery stenosis in 50% of cases. Other causes of carotid bruits include increased venous flow, external carotid artery stenosis, and transmitted cardiac murmur.

Detailed explanation-2: -High-grade (80% to 99% diameter reduction) asymptomatic internal carotid artery stenoses are associated with an increased neurologic event rate (transient ischemic attack, stroke, asymptomatic internal carotid artery occlusion) compared to less severe asymptomatic lesions.

Detailed explanation-3: -This is performed by the vascular technologist before carotid duplex imaging. Carotid bruits were graded as absent (0/3), soft (1/3), loud (2/3) or very loud (3/3).

Detailed explanation-4: -Carotid artery disease occurs when fatty deposits (plaques) clog the blood vessels that deliver blood to your brain and head (carotid arteries). The blockage increases your risk of stroke, a medical emergency that occurs when the blood supply to the brain is interrupted or seriously reduced.