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Cerebro; Cuello; Corazón; Pecho; Abdomen (riñones e hígado); Pelvis; Piernas y . A diferencia de la angiotomografía computarizada (TC) o la angiografía de. Angiotomografía cerebral. TNEP. Done. Comment. 39 views. 0 faves. 0 comments. Taken on July 21, All rights reserved. Angiotomografía cerebral. TNEP. Done. Comment. 49 views. 0 faves. 0 comments. Taken on July 21, All rights reserved · Sony DSC-W ƒ/; mm.

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Angiotomografía cerebral en el estudio de la hemorragia subaracnoidea

Other variants found in the anterior cerebral artery was the azygos variant Fig. The brain is supplied by two sets of vessels. In Mexico there are two previous studies that describe anatomical variants of the cerebral arterial circle, one in cadavers and another with MRA Monroy-Sosa et al. There was no significant association between the presence of the azygos or the triple ACA artery with other variants.

There are no financial or commercial gains for the realization of this study therefore the authors declare that they have no conflict of interest. The results of this study confirm the difference in variants found between different ethnic groups. The presence of an occlusive event in a dominant A2 segment of the anterior cerebral artery when a hypoplasia variant exists in the contralateral A2 segment increases the risk of regional ischemia in both hemispheres Kayembe et al.

Our study supports and extends the results reported by previous studies. In angiotomogrrafia studies, the most prevalent atypical variants were: 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.

Angiografía (angiograma) por sonda (catéter)

The segment which originates from the internal carotid artery to the origin angiotomogarfia the anterior communicating artery was defined as segment A1 and the segment that originates from the AComA to the site proximal to its bifurcation in the pericallosal and callosomarginal arteries was defined as segment A2 Krzyzewski et al. No V- Y- H- or N-shaped cerebrall were found. Casilla Angiogomografia Temuco – Chile Tel.: The amount of contrast agent also differs angioromografia to the patient’s weight, the technique of injection and the number of detectors in the CT machine.


They ascend behind the sternoclavicular joints, lateral to the thyroid gland and at the level of the upper border of the thyroid cartilage, each one divides into external and internal carotid arteries. They were performed angiotomograhy computed and cerebral arteriography.

Result of an anatomical study and review of literature. We found at least one “atypical” variant in a third of the study population The difference between cadaveric and imaging studies is that in cadaveric studies the most prevalent variants were located in the anterior communicating artery, which is the smallest vessel we studied in the anterior circulation of the cerebral arterial circle, and in imaging studies, the absence of this same vessel prevailed.

Previous studies have found a significant difference in the prevalence of anatomical variants of the cerebral arterial circle among different ethnic groups De Silva et al. One of the most common causes of stroke is rupture of aneurysms whose approach requires knowledge of anatomical variants. The diagnostic contribution of CT volumetric rendering techniques in routine practice. CP amc finlay. Normal variants of the cerebral circulation at multidetector CT angiography.

Unable to process the form. Each vertebral artery arises from the 1 st part of the corresponding ceerbral artery. Most of the results obtained by Monroy-Sosa et al.

Angiotomografía cerebral. TNEP.

Our study is the first to use 3D CTA to report the prevalence of anatomic variants of the anterior cerebral artery and the anterior communicating artery in Mexican population. In the literature reviewed, there are few reports that have cerrbral this arterial segment.


A retrospective, observational, cross-sectional descriptive study of patients, independent of sex or age, in which morphometric measurements of cerebral vessels were evaluated using contrasted 3D CTA from a period of two years was performed. Anatomic features and clinical outcomes of 48 cerebrao anterior cerebral artery aneurysms. The right common carotid artery arises from the brachiocephalic trunk while the left common carotid artery arises directly from the aorta.

In our study, an aneurysm associated angiotomorgafia the azygos variant but not with a fenestration of the ACA or AComA was found.

Angiografía por catéter

This could be because they included those cases in which an atypical variant did not exist in the angiotomogrrafia cerebral arterial circle anterior and posterior circulation.

Hypoplastic segments were considered when size was less than 1 mm Monroy-Sosa et al.

Few studies have evaluated the variants of fenestration X- Y- V- H- and N-shaped of the anterior communicating artery of which none were found in our population. The columns cfrebral the results of different studies, while rows show the prevalence obtained from the same variant in different studies.

The internal diameter measurement of the midpoint of the bilateral A1, A2 segments of the anterior cerebral artery, the azygos artery and the accessory of the anterior cerebral artery ACAacs in the case of the triple variant of the ACA was performed.

The posterior circulation consists of the vertebrobasilar system. Images obtained by computed tomography with 3D reconstruction in different patients that show anatomical variants found in the circle of Xerebral arrows.