Post by neurology admin on Nov 25, 2013 0:09:34 GMT -5
Ischemic stroke and Vascular territories of Brain
MCA superior division infarction
The internal carotid artery (ICA) terminates in middle cerebral artery (MCA) and anterior cerebral artery (ACA). The MCA main stem runs laterally towards Sylvian fissure, giving off the lenticulostriate vessels. The lenticulostriate vessels are the small perforators supply the basal ganglia. The MCA main stem then bifurcates into superior and inferior divisions. The superior division supplies the lateral frontal and superior parietal lobes, whereas the inferior division predominantly supplies the lateral temporal and inferior parietal lobes.
The superior division of the MCA is one of the most common locations for embolic stroke, either from carotids or from heart. MCA superior division territory infarctions typically result in a contralateral hemiparesis affecting the lower face and upper extremity more than the leg; similar distribution contralateral hemisensory loss; contralateral visual field deficit predominantly affecting the lower fields; and often a gaze preference to the ipsilateral side. Dominant hemisphere infarct is often associated expressive aphasia where as non-dominant infarct is associated with neglect syndrome
more images with discussions about various branches of intracerebral arteries
www.neuroradiologycases.com/2012/09/ischemic-stroke-and-vascular.html
MCA superior division infarction
The internal carotid artery (ICA) terminates in middle cerebral artery (MCA) and anterior cerebral artery (ACA). The MCA main stem runs laterally towards Sylvian fissure, giving off the lenticulostriate vessels. The lenticulostriate vessels are the small perforators supply the basal ganglia. The MCA main stem then bifurcates into superior and inferior divisions. The superior division supplies the lateral frontal and superior parietal lobes, whereas the inferior division predominantly supplies the lateral temporal and inferior parietal lobes.
The superior division of the MCA is one of the most common locations for embolic stroke, either from carotids or from heart. MCA superior division territory infarctions typically result in a contralateral hemiparesis affecting the lower face and upper extremity more than the leg; similar distribution contralateral hemisensory loss; contralateral visual field deficit predominantly affecting the lower fields; and often a gaze preference to the ipsilateral side. Dominant hemisphere infarct is often associated expressive aphasia where as non-dominant infarct is associated with neglect syndrome
more images with discussions about various branches of intracerebral arteries
www.neuroradiologycases.com/2012/09/ischemic-stroke-and-vascular.html