Related Experiment Video
Updated: Feb 6, 2026

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model
Published on: August 11, 2023
Bilateral hyperdense middle cerebral arteries: Stroke sign or not?
James Vogler1, Veer Gariwala2, Anthony Trace1
1Department of Radiology, Eastern Virginia Medical School, PO Box 1980, Norfolk, VA 23501, USA.
Abstract:
Hyperdense middle cerebral artery (MCA) is a classic sign of acute thromboembolic disease. Simultaneous bilateral occurrence is uncommon and traditionally attributed to physiological hemoconcentration or attributable to imaging artifact. We present the case of a 71-year-old man whose admission noncontrast computed tomography (CT) demonstrated bilateral hyperdense middle cerebral arteries without other radiographic evidence of acute stroke. CT angiography confirmed bilateral MCA, M1 segment vascular occlusion and follow-up noncontrast CT demonstrated MCA territory infarctions.
Related Concept Videos
Sign Convention
The normal force acts perpendicular to the beam's cross-section and can...
Signs of Puberty
Introduction to the Sign Test
Introduction to Vital Signs
Vital signs help healthcare professionals assess an individual's well-being and detect any functional changes...
Sign Test for Nominal Data
For example, consider a...
Sign Test for Matched Pairs
To conduct the sign test, we first calculate the differences in...

