the methods of dissection and analysis of angioCT’s. Each of the details was analyzed comparatively on both sides of the body assessing: the origin of the superior thyroid artery in relation to the carotid bifurcation, the face of the external carotid artery that gives origin and the traject of the artery from the origin to the glandular parenchyma. The origin of the superior thyroid artery was evaluated on a number of 64 cases, most frequently having its origin from the external carotid artery, an aspect met 53.125 % of cases, at a distance that was between 1-18 mm. In 28.125 % of cases the superior thyroid artery had its origin in the common carotid trunk at a distance of 1-10 mm caudal to the terminal bifurcation of the common carotid. In 18.75 % of cases, the thyroid artery originated from the carotid bifurcation, which thus ends up by trifurcation. The side of the vessel that emerges the superior thyroid artery was assessed on 42 cases; most commonly the superior thyroid artery having its origin on the medial face, an aspect found in 66.67 % of cases; in 23.81 % of cases originated from the posterior medial and only two cases (4.76 % of cases), both on the left side(8.70 % of cases on the left), the origin of the superior thyroid artery was located on the anterior, respectively faces of the common carotid artery. The traject of the superior thyroid artery was followed on 53 cases, in most cases the artery showing initially a horizontal traject (transverse) towards medially for 1-4 cm, then became obliquely downward, an aspect met in 28.30 % of cases and in 22.64 % of cases, the artery was obliquely downward from its origin. In 11.32 % of cases the traject was obliquely ascending and in 9.43 % of cases the artery was initially obliquely upward for 2-3 cm, after which became transverse. For the remaining 28.30 % of the cases we have met a number of other 5 different patterns of traject but in a small percentage for each of them (5.66% of cases).
The morphological characteristics at the level of the bifurcation of the common carotid artery were studied on 46 cases, finding that the most frequent, in 52.17% of cases, the common carotid bifurcation appear as the letter "V", with two possible variations: a wide "V", in 43.48% of cases and narrow "V" in 8.7% of cases. In 30.43% of cases, the two carotids showed an ascending traject, united for 1-2 cm up to their crossing; in 13,04% of the cases the two arteries were superimposed, the external located anteriorly. In only in two cases on the right side (4.35% of cases and 8.33% of right samples) we found a peculiar aspect of a "U" shaped bifurcation. Regarding the caliber of the external carotid artery, we found that in 43.33% of the cases the external carotid artery had a similar diameter to the internal carotid, also in 43.33% of the external carotid artery have a higher caliber than internal one and the remaining 13.33% of the cases, the external carotid artery had a smaller diameter than the internal one, with all cases on the left (16.67% of left carotid arteries). The caliber of the right external carotid artery was between 4 to 5.6 mm and the one of the left was between 3.6 to 5 mm. When the external carotid was more voluminous than the internal, the differences were 0.5 to 1.2 mm and when the internal carotid was more voluminous than the external, the differences were smaller, 0.2 to 0.8 mm. In relation to the common carotid, the external carotid had a smaller caliber from 0.6 to 1.1 mm. Regarding the external carotid traject, most commonly,
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