[The algorithm for the assessment of the value of computed tomography prior to endoscopic interventions on the paranasal sinuses].

Computed tomography of paranasal sinuses (CT PNS) is used not only for diagnostics of chronic sinusitis but also as the principal tool for planning different stages and procedures of The algorithm for the assessment of the value of computed tomography prior to endoscopic interventions on the paranasal sinuses endoscopic endonasal intervention. Bearing in mind marked variability of anatomic structures of the sinoonasal region and its close proximity to other vitally important structures, it is crucial to perform a detailed assessment of CT PNS scans prior to endoscopic sinus surgery in the routine fashion and in conformity with the preliminary plan. In order to facilitate the analysis of the preoperative CT PNS data, the ten-step algorithm for scan assessment has been developed to be used for surgery planning and prevention of postoperative complications.