Learning objectives
To elaborate various arterial terroteries of the brain.
To elaborate the MRI appearances of ischemic infarctions in various vascular territories.
Background
An ischaemic stroke classicaly presents with rapid onset of neurological deficit depending on the area of the brain that is involved.
The vascular territory affected determines the exact symptoms and clinical behaviour of the lesion.
Therefore,
one of the key tasks in establishing the diagnosis of acute ischemic stroke is defining the involved arterial territory.
Thorough knowledge of the vascular territories of the brain are required to confidently diagnose that the diffusion restricted abnormality actually represents an acute arterial stroke.
This further guides the investigations...
Findings and procedure details
We present the anatomical distribution of cerebral ischemic infarctions on MR imaging.
In addition to T1W and T2W sequences,
FLAIR and diffusion weighted images are utilized to diagnose infarction and various territorial territories.
Case 1: Anterior cerebral artery infarction.
A 52 years old man presented with acute onset of right lower limb weakness.
T2W and DWI images shows zonal delineation of the left anterior cerebral artery territory involving the interhemispheric parasagittal cortex of thefrontal lobe.
It is calssically involving the anterior two-thirds of the medial...
Conclusion
This posterelaboratesthe normal anatomy of intracranial arteries and their distribution pattern using MRI imaging of territorial strokes as a key learing tool.
The understanding of the vascular territories is not only a basis for accurate diagnosis of ischemic infarction,
it is also highly beneficial during interventional procedures.
Personal information
Dr Samar Hamid,
MBBS,
FCPS,
EDiR,
Radiologist,
Department of Radiology,
Jinnah Postgraduate Medical Center,
Karachi,
Pakistan
Dr Shaiq Hussain,
MBBS,
FCPS (II),
Postgraduate Resident,
Department of Radiology,
Jinnah Postgraduate Medical Center,
Karachi,
Pakistan
Dr Shumaila Arooj,
MBBS,
FCPS,
Fellow in Neuroradiology,
EDiR,
Consultant Radiologist,
Department of Radiology,
Jinnah Postgraduate Medical Center,
Karachi,
Pakistan
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