Patient-specific estimation of detailed cochlear shape from clinical CT images.

Kjer, H Martin; Fagertun, Jens; Wimmer, Wilhelm; Gerber, Nicolas; Vera, Sergio; Barazzetti, Livia; Mangado, Nerea; Ceresa, Mario; Piella, Gemma; Stark, Thomas; Stauber, Martin; Reyes, Mauricio; Weber, Stefan; Caversaccio, Marco; González Ballester, Miguel Ángel; Paulsen, Rasmus R (2018). Patient-specific estimation of detailed cochlear shape from clinical CT images. International Journal of Computer Assisted Radiology and Surgery, 13(3), pp. 389-396. Springer 10.1007/s11548-017-1701-7

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PURPOSE A personalized estimation of the cochlear shape can be used to create computational anatomical models to aid cochlear implant (CI) surgery and CI audio processor programming ultimately resulting in improved hearing restoration. The purpose of this work is to develop and test a method for estimation of the detailed patient-specific cochlear shape from CT images. METHODS From a collection of temporal bone [Formula: see text]CT images, we build a cochlear statistical deformation model (SDM), which is a description of how a human cochlea deforms to represent the observed anatomical variability. The model is used for regularization of a non-rigid image registration procedure between a patient CT scan and a [Formula: see text]CT image, allowing us to estimate the detailed patient-specific cochlear shape. RESULTS We test the accuracy and precision of the predicted cochlear shape using both [Formula: see text]CT and CT images. The evaluation is based on classic generic metrics, where we achieve competitive accuracy with the state-of-the-art methods for the task. Additionally, we expand the evaluation with a few anatomically specific scores. CONCLUSIONS The paper presents the process of building and using the SDM of the cochlea. Compared to current best practice, we demonstrate competitive performance and some useful properties of our method.

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

UniBE Contributor:

Wimmer, Wilhelm; Barazzetti, Livia; Reyes, Mauricio; Weber, Stefan and Caversaccio, Marco

Subjects:

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

ISSN:

1861-6410

Publisher:

Springer

Language:

English

Submitter:

Wilhelm Wimmer

Date Deposited:

22 Jan 2018 15:35

Last Modified:

25 Apr 2018 12:47

Publisher DOI:

10.1007/s11548-017-1701-7

PubMed ID:

29305790

Uncontrolled Keywords:

CT Cochlear implant Intracochlear anatomy Micro-CT Segmentation Statistical shape model

BORIS DOI:

10.7892/boris.109031

URI:

https://boris.unibe.ch/id/eprint/109031

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