Our results on the morphometry of the aortic arch were obtained from measurements made on a total of 66 angioCT’s, (18 females and 48 males) and the results were compared by gender. The diameter of the aortic arch above the origin of the brachiocephalic arterial trunk was found between 25.8 to 37.5 mm. In female it was 26.4 to 29.4 mm range while in males was between 25.8 to 37.5 mm. The diameter of the aortic arch at the level of the aortic isthmus was found between 20.2 to 28.4 mm, which corresponds to the limits found in males while in females the diameter was 21.3 to 24.1 mm. In males we have not met more than 28.4 mm in diameter. In 12 cases (38.71% of cases) we assessed a progressive decrease of the caliber of the ascending aorta from its origin towards the aortic arch (previously to the origin of the brachiocephalic arterial trunk). Between mid-ascending aorta and the origin of the brachiocephalic trunk the diameter diminished with 0.3 to 1.6 mm, in female from 0.3 to 1.6 mm and in male with 0.3-0.4 mm. Between the brachiocephalic trunk origin and the aortic isthmus (posterior to the left subclavian artery origin) we measured a decrease of the aortic diameter between 3.2 to 7.2, in female 3.2-3.6 mm and in male from 5.4 to 7.2 mm.