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Posterior circulation infarct (POCI) is a type of cerebral infarction affecting the posterior circulation supplying one side of the brain.. Posterior circulation stroke syndrome (POCS) refers to the symptoms of a patient who clinically appears to have had a posterior circulation infarct, but who has not yet had any diagnostic imaging (e.g. CT Scan) to confirm the diagnosis.
CT scans may not detect ischemic stroke, especially if it is small, of recent onset, [10] or in the brainstem or cerebellum areas (posterior circulation infarct). MRI is better at detecting a posterior circulation infarct with diffusion-weighted imaging. [79] A CT scan is used more to rule out certain stroke mimics and detect bleeding. [10]
The posterior circulation supplies the medulla, pons, midbrain, cerebellum and (in 70-80% of people) supplies the posterior cerebellar artery to the thalamus and occipital cortex. [1] As a result, symptoms vary widely depending which brain region is predominantly affected. The term 'vertebrobasilar insufficiency' may be used to describe disease ...
This page was last edited on 9 December 2023, at 00:50 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
To image the posterior circulation, such as vertebral and basilar arteries, AP, Towne's view, lateral projections near the back of the head and upper part of the neck is taken. In this case, petrous bone should be projected at the bottom or below the orbits to visualise the basilar artery and its branches in AP/Towne's view. The rate of ...
Cerebral infarction, also known as an ischemic stroke, is the pathologic process that results in an area of necrotic tissue in the brain (cerebral infarct). [1] In mid to high income countries, a stroke is the main reason for disability among people and the 2nd cause of death. [2]
As the supplying component of the vertebrobasilar vascular system, the vertebral arteries supply blood to the upper spinal cord, brainstem, cerebellum, and posterior part of brain. [1] A stroke of the arteries may result in a posterior circulation stroke. [citation needed]
The anterior and posterior circulations meet at the circle of Willis, pictured here, which rests at the top of the brainstem. Inferior view. The posterior cerebral circulation is the blood supply to the posterior portion of the brain, including the occipital lobes, cerebellum and brainstem. It is supplied by the following arteries:
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