Abstract
CT navigation is an instrumental method for the determination of precise position of anatomical structures during surgery based on computer assisted preoperative CT images and consequent registration. In the course of surgery the surgeon is thereby provided with precisely localized anatomical points and also the position of the tool itself in 3D images and in 3 CT planes.
The system of optical navigation Treon Plus of the Medtronic Company is used at the ORL Clinic of 3rd Medical Faculty, Charles University and Central Military Hospital Prague. Since 1st January, 2007 till 31st December, 2009, 141 patients have been operated on giving 257 interventions.
These patients underwent 81 primary surgeries of paranasal sinuses, 46 revision surgeries of the same localization, seven surgical interventions after injuries and seven tumors. This kind of navigation was examined with MR fusion in order to determine the borders of extensive tumor of the tongue.
In this cohort of patients the authors have not detected per- or postoperative complications. The advantage of the present CT navigation lies in the possibility of more extensive radicality, precision, but also higher consideration for the adjacent organs.