نتایج جستجو برای: anterior cerebral artery
تعداد نتایج: 470490 فیلتر نتایج به سال:
Background: Several studies have investigated the variations in the anatomy of each segment of circle of Willis whereas a few have addressed the variations of this arterial circle as a whole. In this study the entire circle of Willis and its variations were studied in a cohort of Iranian people and compared with previous reports.Methods: Anatomical variations of the circle of Willis in 132 brai...
The main cerebral distribution center of 15-20% blood flow from the cardiac output is the cerebral arterial circle or circle of Willis, a nonagon of collateral vessels on the human brain base. At about 4 mm stage of the embryo, the primitive internal carotid arteries, which develop as cranial extensions of the paired dorsal aorta, are formed. Paired longitudinal neural arteries appear along the...
Aneurysms of the complex of the anterior cerebral artery are frequently associated with anatomic variations of the circle of Willis. We describe a case of aneurysmal rupture of the anterior communicating artery, a variant of the anterior cerebral artery. The aneurysm appeared to be situated on this vessel proximal to the infered site of the AcoA. Surgery was performed at the 6th day after hemor...
Address for Correspondence: Dr. Smita B. Shinde, Assistant Professor, Department of Anatomy, MGM’s Medical College, Aurangabad 431 001 (M.S.) India. Mobile no.: +917066651648 E-Mail: [email protected]. Introduction: Anterior cerebral artery is one of the terminal branches of internal carotid artery below the anterior perforated substance. Cerebral artery occlusion may leads to infarction i...
This report presents 8 cases of internal carotid artery aneurysms, 1 case of a middle cerebral artery aneurysm, and 2 cases of anterior cerebral artery aneurysms, together with a discussion of the treatment of aneurysms in anterior circulation. All cases showed subarachnoid hemorrhage. Two of the 8 internal carotid artery aneurysms were trapped with a low-flow bypass; however, both patients die...
A patient with a rare variation of the fronto-orbital artery is presented. In this case, the fronto-orbital artery arises from the A1 segment of the contralateral anterior cerebral artery. The angiographic findings in this case are illustrated and discussed. The importance of recognizing this variant is related to the planning of surgery or endovascular therapy in the anterior cerebral artery r...
The structure and variations of the circle of Willis in 55 days were studied from corrosion-cast specimens. The perivascular sympathetic innervation of the circle was also investigated in 9 dogs using the Schultz silver impregnation method. The following results were obtained. 1) The circle was entirely closed in all specimens. 2) The basic shape and variations of the circle were briefly as fol...
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