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
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-7670
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY-NC-ND
Information on rights of use:	https://creativecommons.org/licenses/by-nc-nd/4.0/
Journal:	The international journal of medical robotics and computer assisted surgery 18 3
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