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http://hdl.handle.net/1942/14656
Title: | Validation of anatomical landmarks-based registration for image-guided surgery: An in-vitro study. | Authors: | SUN, Yi Luebbers, Heinz-Theo Agbaje, Jimoh Olubanwo Schepers, Serge Vrielinck, Luc LAMBRICHTS, Ivo POLITIS, Constantinus |
Issue Date: | 2013 | Source: | JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY, 41 (6), p. 522-526 | Abstract: | Introduction: Perioperative navigation is a recent addition to orthognatic surgery. This study aimed to evaluate the accuracy of anatmical landmarks-based registration. Materials and methods: Eighty-five holes (1.2 mm diameter) were drilled in the surface of a plastic skull model, which was then scanned using a SkyView cone beam computed tomography scanner. DICOM files were imported into BrainLab ENT 3.0.0 to make a surgical plan. Six anatomical points were selected for registration: the infraorbital foramena, the anterior nasal spine, the crown tips of the upper canines, and the mesial contact point of the upper incisors. Each registration was performed five times by two separate observers (10 times total). Results: The mean target registration error (TRE) in the anterior maxillary/zygomatic region was 0.93 ± 0.31 mm (p < 0.001 compared with other anatomical regions). The only statistically significant inter-observer difference of mean TRE was at the zygomatic arch, but was not clinically relevant. Conclusion: With six anatomical landmarks used, the mean TRE was clinically acceptable in the maxillary/zygomatic region. This registration technique may be used to access occlusal changes during bimaxillary surgery, but should be used with caution in other anatomical regions of the skull because of the large TRE observed. | Notes: | Addresses: [ 1 ] St Johans Hosp, B-3600 Genk, Belgium [ 2 ] Hasselt Univ, Fac Med, Diepenbeek, Belgium [ 3 ] Univ Ghent, Fac Med, Ghent, Belgium [ 4 ] Univ Zurich Hosp, Clin Craniomaxillofacial Surg, Zurich, Switzerland E-mail Addresses: constantinus.politis@uhasselt.be | Keywords: | Bimaxillary orthognathic surgery; Computer-assisted surgery; Target registration error; Cone beam computed tomography; Anatomical landmark; In-vitro | Document URI: | http://hdl.handle.net/1942/14656 | ISSN: | 1010-5182 | e-ISSN: | 1878-4119 | DOI: | 10.1016/j.jcms.2012.11.017 | ISI #: | 000324849000011 | Rights: | Copyright © 2012 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2014 |
Appears in Collections: | Research publications |
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