posterior cerebral artery

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Related to posterior cerebral artery: middle cerebral artery, basilar artery, anterior cerebral artery

pos·te·ri·or ce·re·bral ar·ter·y

formed by the bifurcation of the basilar artery; it passes around the cerebral peduncle to reach the medial aspect of the hemisphere. For descriptive purposes it is divided into three parts, consisting of four segments: 1) precommunicating part (P1 segment of clinical terminology), which gives rise to posteromedial central arteries [TA], short circumferential arteries [TA], the thalamoperforating artery [TA], and the collicular artery [TA]; 2) the postcommunicating part (P2), which gives rise to posterolateral central arteries [TA], posterior medial choroidal branches [TA], posterior lateral choroidal branches [TA], peduncular branches [TA], and the thalamogeniculate artery [TA]; and 3) the terminal or cortical part consisting of the lateral occipital artery [TA] (P3) the branches of which serve the medial aspect of the temporal lobe and the medial occipital artery [TA] (P4), with branches that serve the medial surface of the occipital lobe; the latter includes calcarine and parietooccipital arteries.
Synonym(s): arteria cerebri posterior [TA]
Farlex Partner Medical Dictionary © Farlex 2012

pos·te·ri·or ce·re·bral ar·te·ry

(pos-tēr'ē-ŏr ser'ĕ-brăl ahr'tĕr-ē) [TA]
Formed by bifurcation of the basilar artery; it passes around the cerebral peduncle to reach the medial aspect of the hemisphere.
Synonym(s): arteria cerebri posterior.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

posterior cerebral artery

The end branch of the basilar artery; it runs around the sides of the midbrain, through the tentorium cerebelli, and along the temporal and occipital lobes to end in the calcarine fissure (the primary visual cortex). Its branches supply blood to the posterior hypothalamus, subthalamus, the choroid plexus of the third ventricle, the internal capsule, the ventral (inferior) surfaces of the temporal and occipital lobes, and parts of the thalamus and the midbrain. The posterior cerebral artery anastomoses with the circle of Willis via the posterior communicating artery.
See: brain (Major arteries of the brain) and circle of Willis for illus.
See also: artery
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The superficial temporal artery, occipital artery, and external carotid artery can be used to increase blood flow to superior cerebellar artery, posterior cerebral artery, posterior inferior cerebellar artery, or anterior inferior cerebellar artery [10].
The left middle cerebral artery had a fetal origin from the left posterior cerebral artery. The right posterior cerebral artery and posterior communicating artery were normal.
Anatomical variations in the origin of the posterior cerebral artery demostrated by carotid angiography and their significance in the direct surgical treatment of posterior communicating aneurysms.
The MRI showed fresh ischemic lesions in the area of right middle cerebellar peduncle and right crus cerebri, the areas served by anterior inferior cerebellar and posterior cerebral artery, respectively.
Posterior Cerebral Artery (PCA) is a branch of basilar artery, which are formed by the union of two vertebral arteries.
The nidus measured 7.5 X 4 X 3.5 cm with supply predominantly from multiple feeders from hypertrophied left posterior cerebral artery and left middle cerebral artery.
Abbreviations ADC: Apparent diffusion coefficient CT: Computed tomography DWI: Diffusion weighted imaging EEG: Electroencephalogram FLAIR: Fluid-attenuated inversion recovery MRA: Magnetic resonance angiogram MRI: Magnetic resonance imaging PCA: Posterior cerebral artery PRES: Posterior Reversible Encephalopathy Syndrome.
12.07 cases showed posterior cerebral artery involvement; 5.17% showed anterior cerebral artery involvement; 15.52% showed lacunar infarcts; 12.93% showed white matter ischemic changes; 7.76% shower basilar artery except PCA territory involvement; 6.03% showed multiple infarcts and 0.86% showed watershed infarct.
His brain magnetic resonance imaging (MRI) revealed acute cerebral ischemia in the territory of the left anterior cerebral artery (ACA) and subacute cerebral ischemia in the territory of the posterior cerebral artery (PCAFigure 1).

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