Mariam Mahmoud Ali/LinkedIn
Mar 28, 2026, 16:07
Mariam Mahmoud Ali: Understanding Vascular Territories Is Key to Quickly Localizing Strokes on MRI
Mariam Mahmoud Ali, Neurology Resident at Shifa Hospitals Group, shared on LinkedIn:
”Anterior Circulation Stroke Patterns on MRI (DWI)
Understanding vascular territories is key to quickly localizing strokes on MRI.
The anterior circulation – primarily supplied by the internal carotid artery – feeds most of the frontal, parietal, and temporal lobes.
Each arterial occlusion produces a characteristic infarct pattern:
Carotid T-Occlusion
- Massive infarction (ACA plus MCA territories)
- Severe neurological deficit
ACA Occlusion
- Medial frontal/parietal infarct
- Leg weakness, behavioral changes, incontinence
MCA M1 Occlusion
- Large cortical infarct (frontal, parietal, temporal)
- Hemiplegia, aphasia, visual field loss
MCA M2 Occlusion
- More localized cortical infarct
- Focal deficits (language/sensory/motor depending on branch)
Lenticulostriate Infarction
- Deep structures (basal ganglia, internal capsule)
- Often due to hypertension
Striatocapsular Infarction
- Large deep infarct
- Severe motor deficits
Key Radiology Tip:
On DWI – Acute infarcts appear bright equals early detection plus precise localization.”
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