Arteria Ophthalmica ve Dallarının Superselektif Anjiyografi Yöntemi ile İncelenmesi
AKDEMİR AKTAŞ, Hilal
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The vascular anatomy of the orbit is highly complex. The main source of blood supply to the orbit is by the ophthalmic artery, which is the branch of internal carotid artery. The purpose of this study was to determine the morphometry of ophthalmic artery and its branches and investigate the possible variations by superselective angiography in a large series of pediatric patients. In this study, we evaluated 134 angiographies carried out on children affected by intraocular retinoblastoma and undergoing intra-arterial chemotherapy. The origin, diameter and angiographic visibility percentage of ophthalmic artery and its branches were examined according to age groups and gender. The ophthalmic artery originated from ophthalmic segment of the internal carotid artery in 97.8% of cases. In three of 134 cases, it originated from middle meningeal artery as a variation. The diameter of the ophthalmic artery was measured 0.79 ± 0.15 mm (min-max: 0.51-1.18 mm). Posterior ciliary, lacrimal, inferior muscular and anterior etmoidal arteries had a higher angiographic visibility percentage (>85%). The diameters of the internal carotid artery before and after the origin of the ophthalmic artery, recurrent meningeal branch and dorsal nasal artery had significant correlation with age. The diameters of the internal carotid artery before and after the origin of the ophthalmic artery and supratrochlear artery were found to be higher in boys than in girls. However; the diameters of posterior ciliary arteries were found to be higher in girls, when compared with boys. The other morphometric parametres were nearly the same in both sexes. We believe that this study will make a substantial contribution to the pediatric literature of ophthalmic artery, and it will help to the surgeons who are making operation on the orbit and will be useful for the radiologists who are doing superselective angiography of ophthalmic artery.