Home / Neurology and Neurosurgery / Neuro-imaging / Vascular Disease / Ischaemic Stroke / Ischaemic Strokes of Different Etiologies

Ischaemic Strokes of Different Etiologies

Stroke due to other determined cause

Strokes due to other determined cause would include those due to carotid or vertebral artery dissection, vasculitis and thrombophilias.

The first case shows the MRI (Figure 1) from a patient with a right carotid artery dissection resulting in an anterior circulation infarct. The MRI shows a clear dissection flap along the right carotid artery arrow_1. If the dissection flap is large and occludes the entire artery lumen, this may result in impaired blood flow causing cerebral ischaemia. The dissection flap will also result in turbulent, non-laminar blood flow along the blood vessel, thus resulting in blood clot formation and embolic stroke. Carotid and neck dissections are commonly caused by neck trauma or manipulation.

The next MRI (Figure 2) is from a patient with cerebral vasculitis due to underlying systemic lupus erythematosis. There are multiple areas of restricted diffusion arrow_1 in the diffusion weighted imaging sequence signifying multiple infarcts as a result of the vasculitic process.

Welcome to the HKU eLearning Platform in Clinical Neurosciences!

If this is the first time you have accessed the platform, we would be most grateful if you could let us know a little bit about you.

 

What is your occupation?

 

Student

 

Medical doctor

 

Others

 

How did you hear about this platform?