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KMID : 0378019830260010087
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New Medical Journal
1983 Volume.26 No. 1 p.87 ~ p.95
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Use of Doppler ultrasound in the non-invasive diagnosis of extracranial carotid occlusive disease; flow dynamics around the orbit in normal young adult
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Abstract
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Sixty three normal young adult volunteers were studied by directional Doppler ultrasound to assess the flow dynamics in the supraorbital and the frontal arteries around the orbit. The resting flow was antegrade out of the orbit in all the 126 supraorbital and the frontal arteries studied. The amplitude of the flow velocity signal in resting flow was greater in the frontal artery than in the supraorbital artery.
Compression of ipsilateral superficial, temporal artery augmented flow in 92.8% of all the supraorbital arteries and 76.1% of all the frontal arteries. Also ipsilateral facial artery compression augmented flow in 13.4% of all the supraorbital arteries and 44.4% of all the frontal arteries. The influence of compression of all the branches of the external carotid artery was greater in the supraorbital artery than in the frontal artery.
The response to ipsilateral common carotid artery compression showed marked diminution in flow of all the supraorbital frontal arteries. The contralateral common carotid artery compression resulted in augmentation of supraorbital & frontal artery flow in 53.8% of all the vessels and caused no change in flow in the remaining vessels with antegrade flow.
From these data the author concludes that the evaluation of directional flow in the supraorbital & frontal artery and of the influence of compression of all the branches of the external carotid artery as well as the common carotid artery is a highly reliable technique to identify significant stenosis and obstruction of extracracranial carotid artery.
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