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Authors: Thiem, Daniel G. E.
Seifert, Lukas
Graef, Julian
Al-Nawas, Bilal
Gielisch, Matthias
Kämmerer, Peer W.
Title: Marker-free registration for intraoperative navigation using the transverse palatal rugae
Online publication date: 5-Sep-2022
Year of first publication: 2022
Language: english
Abstract: Background Registration is most important in navigation-assisted-surgery including the matching between the coordinates of the actual patient space and the medical image. Marker-based techniques mostly include marker application with subsequent radiography. In the edentulous patient, maker-free methods are generally less accurate and reproducible. This new method of a marker-free registration uses the transverse palatal rugae as registration structures. Methods (1) Segmentation of bone and hard palatal mucosa from initial 3D imaging (DICOM), (2) Maxillary intraoral-scan with transfer to the 3D imaging using an Iterative-Closest-Point-Algorithm (ICP), (3) Marking digital registration points with holes within IOS-stl, (4) Transformation of the spatially aligned IOS-stl to LabelMap and storage in DICOM (IOS-DICOM), (5) Alignment of DICOM and IOS-DICOM, (6) Controlled positioning of digital reg. points and clinical correlation. Results Fiducial localization error (0.48 mm) and Target registration error (0.65 mm) is comparable to those of tooth-supported registration methods. Conclusion This approach of marker-free registration for navigation-assisted-surgery could improve the treatment in edentulous patients avoiding additional imaging and invasive marker insertion.
DDC: 610 Medizin
610 Medical sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 04 Medizin
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
License: CC BY-NC-ND
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Journal: The international journal of medical robotics and computer assisted surgery
Pages or article number: e2362
Publisher: Wiley
Publisher place: Chichester
Issue date: 2022
ISSN: 1478-596X
Publisher DOI: 10.1002/rcs.2362
Appears in collections:JGU-Publikationen

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