Computer Assisted Navigation on Endoscopic Sinus Surgery for Treatment of Sinonasal Polyposis

Endoscopic sinus surgery (ESS) is a treatment of choice for rhinosinusitis (CRS), sinonasal polyposis and in cases of skull base diseases. Despite the availability of excellent nasal telescopes and high-resolution preoperative computed tomography (CT), incidence of complications in endoscopic sinus surgery is of 0-1.5% for the major and 1.1-20.8% for the minor. Electromagnetic and optical localization systems both enable real-time detection of instrument position in a 3D imaging repository. At present, such repositories are exclusively based on CT acquisitions reformatted to obtain a series of slices in three dimensions. A software interface matches the imaging repository to a peroperative spatial repository in which the instrument can be located.