Pattern of Atherosclerotic Carotid Stenosis in Korean Patients with Stroke: Different Involvement of Intracranial versus Extracranial Vessels
Dae Chul Suha,
Soo-Hyun Leea,
Kyung Rae Kima,
Sung Tae Parka,
Soo Mee Limb,
Sang Joon Kima,
Choong Gon Choia and
Ho Kyu Leea
a Department of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea
b Department of Radiology, Ewha Women’s University Mokdong Hospital, Seoul, Korea
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FIG 1. A 66-year-old male patient presented with unstable angina. He had mild right hemiparesis due to a stroke 8 years before, and he had a 2-month history of transient left hemiparesis. His risk factors included diabetes mellitus and hypertension.
A, Lateral right common carotid arteriogram shows severe stenosis in the proximal cervical segment of the right internal carotid artery.
B, Anteroposterior view shows no significant stenosis in the intracranial vessels except for mild luminal irregularities.
C and D, Left common carotid arteriograms shows mild narrowing of the carotid bulb portion without significant stenosis in the intracranial vessels.
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FIG 2. A 43-year-old male patient presented with repeated right hemiparesis due to a transient ischemic attack. He had a 15 pack-year smoking history.
A, Left carotid bulb is normal.
B, Intracranial angiogram shows severe stenosis (arrow) of the left M1 segment corresponding to the patient’s symptoms.
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