Hemodynamic effects of innominate artery occlusive disease on anterior cerebral artery.
Stenoses of the innominate artery (IA) may affect flow conditions in the carotid arteries. However, alternating flow in ipsilateral anterior cerebral artery (ACA) due to IA stenosis is extremely rare. A 49-year-old woman who was evaluated for symptomatic cerebrovascular disease presented with right latent subclavian and right carotid system steal. Transcranial Doppler examination displayed systolic deceleration wave-forms in the right terminal internal carotid artery and alternating flow in the right ACA. Magnetic resonance angiography demonstrated tight stenosis of the right IA. For a thorough study of the hemodynamic effects of IA stenosis, a combination of duplex and transcranial Doppler examination is required.
Tan
Teng-Yeow
TY
Department of Neurology, Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien, Taiwan. tengyeowtan@yahoo.com
Lien
Li-Ming
LM
Schminke
Ulf
U
Tesh
Paul
P
Reynolds
Patrick S
PS
Tegeler
Charles H
CH
D020771:Anterior Cerebral Artery / Q000000981:diagnostic imaging*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D016122:Brachiocephalic Trunk / Q000000981:diagnostic imaging*; D016893:Carotid Stenosis / Q000000981:diagnostic imaging; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008875:Middle Aged; D017585:Ultrasonography, Doppler, Transcranial