Avaliação da artéria etmoidal anterior pela tomografia computadorizada no plano coronal

Abstract

The anterior ethmoidal artery (AEA) is an important point for frontal and ethmoid sinuses surgery. CT scans can identify landmarks to help the surgeon find the AEA. Aim: To identify the landmarks of the AEA on the orbital medial wall and on the lateral wall of the olfactory fossa. and to correlate the presence of supraorbital ethmoidal cells with spotting the anterior ethmoidal artery canal. Materials and Methods: Retrospective review of 198 direct coronal paranasal sinuses computed tomography (CT) scans from August to December, 2006. Results: Supraorbital pneumatization was seen in 35% (70 scans). The AEA canal was seen in 41% (81 scans). The anterior ethmoidal sulcus was seen in 98% (194 scans) and the anterior ethmoidal foramen was seen in all the scans (100%). Conclusion: The anterior ethmoidal foramen and the anterior ethmoidal sulcus were anatomical landmarks present in almost 100% of the scans studied. There was a correlation between the presence of supraorbital pneumatization and AEA canal visualization.

Study of Anthropometric Measurements of the Anterior Ethmoidal Artery using Three-dimensional Scanning on 300 Patients

“…Souza et al 8 and Ding et al 16 found the anterior ethmoidal foramen in 100% of CT scans, as we found in this study. ANOVA with a p < 0.05 factor.…”

“…6,7 It gives off meningeal branches on its way in the olfactory fossa, going down to the nasal cavity, where it supplies the anterior third of the nasal septum and the lateral wall of the nose. 8 The anterior ethmoidal artery (AEA) goes through the orbit and the ethmoidal cells, and then gets into the olfactory fossa through the anterior ethmoidal groove of the lamina cribrosa. 8,9 Locating the AEA is important for the identification of the frontal sinus recess, as well as for the determination of the skull base in endonasal surgery.…”

“…8 The anterior ethmoidal artery (AEA) goes through the orbit and the ethmoidal cells, and then gets into the olfactory fossa through the anterior ethmoidal groove of the lamina cribrosa. 8,9 Locating the AEA is important for the identification of the frontal sinus recess, as well as for the determination of the skull base in endonasal surgery. 2 Its location is variable in terms of distance from the frontal sinus and the skull base, 4,9,10 which makes it potentially vulnerable to lesions in nasal surgery procedures.…”

“…Many landmarks for distance have been tested, such as the anterior nasal spine, the axilla of the middle turbinate, the lacrimal crest, and the frontal recess. 2,4,6,8,13,15 The aim of this study was to analyze and compare the measurements from the AEA to the ethmoid bulla and to the frontal beak through facial CT scan, while identifying their intraindividual and interindividual variations.…”

WITHDRAWN: The utilization of paranasal sinus coronal tomography scans as a predictor for the anterior ethmoidal artery course.

“…The AEA supplies the frontal sinus, the anterior ethmoidal cells as well as anterior one-third of nasal septum and the sidewall of the nasal cavity. Moreover; within the olfactory fossa, it grants the meningeal vessels to the dura mater [3].…”