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Updated: Mar 8, 2026

Permanent Cerebral Vessel Occlusion via Double Ligature and Transection
Published on: July 21, 2013
Relative Hypodense Vertebral Artery Sign on Computerized Tomography in Atherosclerotic Near Occlusion
Muhammad Faraz Raghib1, Slaven Pikija2
1Aga Khan University, Medical College, Karachi, Pakistan.
Abstract:
A 52-year-old white male presented with an acute onset of slurred speech along with hypoesthesia in the entire left arm. The acute computed tomography (CT) showed relative hypodensity in the intracranial segment of left vertebral artery (VA) that was not present in historical images, pointing to the possible lack of flow. The site of occlusion was confirmed by magnetic resonance imaging (MRI) that showed susceptibility effect in the affected artery. By means of historical native CT comparison the site of VA thrombosis was correctly predicted. Local atherosclerotic thrombosis of the VA could be relatively hypodense on native CT and still have positive susceptibility weighted imaging (SWI) sign.
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