posterior cerebral artery

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Related to Posterior cerebral: Posterior communicating

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]

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.

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
References in periodicals archive ?
The peak systolic flow rate in the anterior carotid artery, middle cerebral artery and posterior cerebral artery, and the mean flow rate, PI, and RI values of volunteers are summarized in Table 2.
Bilateral posterior cerebral artery###0###6(100%)###6(100%)
Abbreviations ACA: Anterior cerebral artery CAD: Coronary arterial disease CT: Computed tomography CVA: Cerebrovascular accident ECG: Electrocardiogram ESUS: Embolic stroke of undetermined significance FLAIR: Fluid attenuated inversion recovery MRA: Magnetic resonance angiogram MRI: Magnetic resonance imaging PCA: Posterior cerebral artery PET: Positron emission tomography PVC: Premature ventricular contractions.
Prior to therapy (a): prolonged mean transit time in large parts of the left middle cerebral artery territory as well as both posterior cerebral artery territories and an area with only moderately elevated transit time was found in the left insular cortex (white circle).
Starke et al., "Failure of the pipeline embolization device in posterior communicating artery aneurysms associated with a fetal posterior cerebral artery," Case Reports in Vascular Medicine, vol.
Distribution of findings and results of treatment options Patient Sex Age Cranial Cranial Number (years) MR MRA 1 Male 50 PCA AS 2 Male 39 MCA N 3 Male 25 MCA N 4 Female 41 MCA AS 5 Male 26 MCA AS 6 Female 60 MCA N 7 Male 56 MCA AS 8 Female 39 MCA N 9 Female 52 PCA AS 10 Male 44 PCA N 11 Male 42 MCA Left ICA severe stenosis (> 90%) Patient Medical Percutaneus Recurrence Number treatment closure of stroke 1 Yes No No 2 Yes No No 3 Yes Yes No 4 Yes No No 5 Yes No No 6 Yes No No 7 Yes Yes No 8 Yes No No 9 Yes No No 10 Yes No No 11 Yes No No MR: magnetic resonance; MRA: magnetic resonance angiography; PCA: posterior cerebral artery; MCA: middle cerebral artery; ICA: internal carotid artery; ACA: anterior cerebral artery; AS: asymptomatic minor findings; N: normal
Meanwhile, the 75-mg dose was the only one to increase vasodilator responsiveness in the posterior cerebral arteries.
After surgical clipping, rebleeding was noted, and repeat DSA demonstrated that the bleeding site was on the right posterior cerebral artery.
These cases were associated with cerebral edema in portions of the posterior cerebral white matter.
The SN is supplied with blood by four pial arteries: the basilar, the posterior cerebral, the posterior communicating and the choroid (Knox & Finley, 1936).
The radiological findings are frequently characterized with transient bilateral grey and white-matter changes compatible with vasogenic edema in the posterior cerebral hemispheres, parieto-occipital areas and cerebellum (1).
These findings include a slowing at the posterior cerebral and centro temporal regions with a pattern of monophasic slow waves induced by hyperventilation (20).

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