Surface matching for high-accuracy registration of the lateral skull base

Zhou, Chaozheng; Anschuetz, Lukas; Weder, Stefan; Xie, Le; Caversaccio, Marco; Weber, Stefan; Williamson, Tom (2016). Surface matching for high-accuracy registration of the lateral skull base. International Journal of Computer Assisted Radiology and Surgery, 11(11), pp. 2097-2103. Springer 10.1007/s11548-016-1394-3

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PURPOSE The accuracy achievable when utilizing image guidance depends to a large extent on the accuracy with which the patient can be registered to preoperative image data. This work proposes a method for the registration of the temporal bone based on surface matching and investigates the achievable accuracy of the technique. METHODS Fourteen human temporal bones were utilized for evaluation; incisions were made, fiducial screws were implanted to act as a ground truth, and imaging was performed. The positions of the fiducials and surface of the mastoid were extracted from image data and reference positions defined at the round window and the mastoid surface. The surface of the bone was then digitized using a tracked pointer within the region exposed by the incisions and the physical and image point clouds registered, with the result compared to the fiducial-based registration. RESULTS Results of one case were excluded due to a problem with the ground truth registration. In the remaining cases an accuracy of [Formula: see text] and [Formula: see text] mm was observed relative to the ground truth at the surface of the mastoid and round window, respectively. CONCLUSIONS A technique for the registration of the temporal bone was proposed, based on surface matching after exposure of the mastoid surface, and evaluated on human temporal bone specimens. The results reveal that high-accuracy patient-to-image registration is possible without the use of fiducial screws.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT)
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Image Guided Therapy > ARTORG Center - Artificial Hearing Research
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Image Guided Therapy
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research

UniBE Contributor:

Zhou, Chaozheng; Weder, Stefan; Xie, Le; Caversaccio, Marco; Weber, Stefan and Williamson, Tom

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

1861-6410

Publisher:

Springer

Language:

English

Submitter:

Lars Marius Schwalbe

Date Deposited:

19 Dec 2016 17:15

Last Modified:

19 Dec 2016 17:15

Publisher DOI:

10.1007/s11548-016-1394-3

PubMed ID:

27142458

BORIS DOI:

10.7892/boris.91248

URI:

https://boris.unibe.ch/id/eprint/91248

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