Flat hypoechoic bifurcation of the innominate artery is considered to be an ultrasound manifestation of carotid atherosclerotic lesion.
The proximal part of the innominate artery branches off from the aortic arch, and the distal part is a Y shape formed by branches of the common carotid artery and subclavian artery. Carotid atherosclerotic lesions are one of the most important causes of carotid ischemic cerebrovascular lesions.
Atherosclerotic lesions are mostly seen in the carotid artery bifurcation, i.e., “anonymous artery bifurcation”, and the pathophysiological changes can be manifested as fusion and thickening of carotid artery intima-media, plaque formation and gradually forming arterial stenosis, occlusion, and finally leading to the disruption of local cerebral blood flow supply, causing cerebral infarction and other diseases.
It is recommended that patients should consult a cardiovascular and cerebrovascular specialist hospital and receive treatment under the guidance of a doctor to prevent delays in their condition.