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Related to anterior cerebral artery: posterior cerebral artery, middle cerebral artery, basilar artery
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Studying of the intracranial hemodynamics demonstrated that in case of atherosclerotic cerebral hemisphere stroke the dominating indicators include reduction of perfusion of the medium cerebral artery accompanied with rigidity growth of the vessel wall, and increase of the linear blood flow velocity in homolateral anterior cerebral artery, what is the sign of stenosis of segments of medium cerebral artery (sometimes with the similar increase of linear blood flow velocity in posterior cerebral artery).
Anterior cerebral artery, the symptoms are contralateral hemiparesis (especially in the leg), incontinence, loss of coordination and impaired motor and sensory functions.
Table 1 Anterior Circulation Major Artery Area of Brain Supplied Middle Cerebral Artery (MCA) Entire lateral surfaces of the hemisphere except for the occipital pole and the inferio- lateral surface of the hemisphere, Anterior Cerebral Artery (ACA) Medial surfaces of frontal and parietal lobes and part of cingulate gyrus.
5) In this case, as in other reports of intracavernous anastomosis, (23,6-8) the intracavernous vessel continues as the middle cerebral artery (MCA), while the A1 segment of the anterior cerebral artery (ACA) ipsilateral to the absent ICA is aplastic or hypoplastic; this is slightly different than Lie's original description in which the intracavernous anastomosis supplies both the MCA and ACA territories.
The aim of this study was to determine the prevalence and morphometric characteristics of anatomical variants of the AComA and the precommunicating (A1) and postcommunicating (A2) segments of the anterior cerebral artery by cerebral computerized angiotomography with 3D reconstruction (3D CTA).
Near the superior frontal gyrus, these arteries anastomose with branches from the pericallosal artery of the anterior cerebral artery.
Moreover, the reduction of "flow voids" in regions of the internal carotid artery (ICA), anterior cerebral artery (ACA) and medium cerebral artery (MCA) associated with an increase in collateral vessels of the basal ganglia and thalamus is considered essential to the diagnosis.
MR angiography, determined occlusion at the right supraclinoid internal carotid artery (ICA), about 80 % shrinkage in the left ICA and basilar artery, and filling of the bilateral middle cerebral artery (MCA), anterior cerebral artery (ACA) and posterior cerebral arteries (PCA) via collaterals (Figure-2a).
The typical angiographic appearance is narrowing of the supraclinoid internal carotid artery, proximal anterior cerebral artery and proximal middle cerebral artery.
The internal carotid artery (ICA) enters the cranial vault posterior to the eye orbit, supplying blood to the ophthalmic artery before terminating into the middle cerebral artery (MCA) and the anterior cerebral artery (ACA).

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