A computed tomography comprehensive evaluation of the ostium of the sphenoid sinus and its clinical significance

Abstract

Background: The purpose of this research was to evaluate the size of the sphenoid sinuses' ostia, the distance between them and the distance between the medial margin of the ostia and the median line in the Polish adult population. Materials and methods:The analysis was undertaken as a retrospective study of 296 computed tomography (CT) scans of patients (147 females, 149 males) with no comorbidities in their sphenoid sinuses. The paranasal sinuses were investigated by using Spiral CT Scanner (Siemens Somatom Sensation 16), in the option Siemens CARE Dose 4D, without administering any contrast medium. Having obtained transverse planes, multiplans reconstruction tool was used in order to glean sagittal and frontal planes. Results:The average size of both sphenoid sinuses ostia was 0.31 cm for both genders (for females ranging from 0.1 to 0.5 cm and from 0.1 to 0.6 cm for males). The mean distance between both sphenoid sinuses ostia was 0.6 cm for both genders (the range for females was 0.1-1.4 cm, whereas 0.1-1.8 cm for males). The average distance between the medial margin of the ostium and the median line was 0.32 cm for both genders (0.31 cm for females in the range of 0-0.9 cm and 0.32 cm for males in the range of 0-1 cm).Conclusions: Intraoperative identification of the sphenoid sinus ostia might prove difficult and their inadequate excision could lead to potential iatrogenic complications, hence detailed anatomical descriptions are still warranted in specific populations in order to perform safe and effective procedures.

Optic chiasmatic potential by endoscopically implanted skull base microinvasive biosensor: a brain-machine interface approach for anterior visual pathway assessment

“…Furthermore, the diameter of SS is around 20 mm 13 , offering a large operating space for the implantation of relatively large and complex BMIs (Figure 1 D). Small BMIs at the skull base can enter SS non-invasively through the sphenoid ostium (SO), a 3 mm wide natural opening of SS 14 (Figure 1 E).…”

Patterns of Pneumatization of the Posterior Nasal Roof

“…Such anterior supranasal recesses of the sphenoidal sinus are commonly observed in computed tomography scans but are overlooked [30]. A number of other studies have provided important details regarding the numerous anatomic possibilities of the sphenoidal sinuses [8,[31][32][33][34][35][36][37][38][39]. However, there is still a substantial amount of research that needs to be conducted on this aspect [31].…”

Prevalence of the Onodi cell in the Polish adult population: an anatomical computed tomography study

“…Other relevant structures mostly pertain to the lateral wall of the sphenoid sinus and ethmoid including the cavernous sinus and all its enclosed structures (cranial nerves III, IV, VI, V 1 , and V 2 ) and the vidian nerve, as well as even the brain stem behind the clival part of the sphenoid bone. Anatomic variants of the paranasal sinuses and nasal cavity may be more common, and may even overlap leading to complicated structure and function [7][8][9][10][11][12][13][14][15][16].…”