Recently, a new mobile iCT has become commercially available with focus on combining full-fledged iCT imaging and navigation, while at the same time improving versatility and optimizing surgical workflow. In particular for novice operators, initial experience with spinal image guidance may, therefore, not immediately demonstrate the same high accuracy rates regarding screw positioning widely quoted in the literature. Moreover, currently 123 Eur Spine J available full-fledged iCT/navigation setups usually require cumbersome surface- or point-matching for referencing, which may obstruct surgical workflow. Despite their hallmark characteristic of permitting immediate assessment of incorrect screw positioning with the chance of direct revision, however, currently available iCT setups remain hampered for one or more reasons, such as their limited versatility due to permanently installed iCT scanners in a single dedicated OR suite, the small iCT gantry size or a limited scan volume. Ko¨nig Department of Anesthesiology and Operative Intensive Care Medicine, Charite´-Universita¨tsmedizin Berlin, Berlin, Germany Keywords AIRO Pedicle screw placement Intraoperative CT Navigated spine surgery 3D imaging Recent studies and meta-analysis have evidenced the superior accuracy of navigated spinal instrumentation compared to non-navigated techniques with further improvement through additional implementation of intraoperative computed tomography (iCT). Hamm Department of Diagnostic and Interventional Radiology, Charite´-Universita¨tsmedizin Berlin, Berlin, Germany S. Kamphuis MIRA Institute for Biomedical and Technical Medicine, University of Twente, Enschede, The Netherlands B. The indications for AIRO were based on the surgical region, anatomical complexity and the need for Introduction M. Methods AIRO iCT was used for navigated posterior spinal instrumentation of 170 screws in 23 consecutive patients operated on in our Department between the first use of the system in May 2014 and August 2014. Against this background, we report the first experience of navigated spinal instrumentation with the mobile AIRO intraoperative computed tomography (iCT) scanner. Peter Vajkoczy Received: 24 September 2014 / Revised: 9 February 2015 / Accepted: 11 February 2015 Springer-Verlag Berlin Heidelberg 2015 Abstract Purpose Current solutions for navigated spine surgery remain hampered by restrictions in surgical workflow as well as a limited versatility and applicability.Eur Spine J DOI 10.1007/s0058-4 ORIGINAL ARTICLE Accuracy and workflow of navigated spinal instrumentation with the mobile AIROÒ CT scanner Nils Hecht
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