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Proceedings Paper

Cochlear shape description and analyzing via medial models
Author(s): Johannes Gaa; Lüder A. Kahrs; Samuel Müller; Omid Majdani M.D.; Tobias Ortmaier
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Paper Abstract

Planning and analyzing of surgical interventions are often based on computer models derived from computed tomography images of the patient. In the field of cochlear implant insertion the modeling of several structures of the inner ear is needed. One structure is the overall helical shape of the cochlea itself. In this paper we analyze the cochlea by applying statistical shape models with medial representation. The cochlea is considered as tubular structure. A model representing the skeleton of training data and an atomic composition of the structure is built. We reduce the representation to a linear chain of atoms. As result a compact discrete model is possible. It is demonstrated how to place the atoms and build up their correspondence through a population of training data. The outcome of the applied representation is discussed in terms of impact on automated segmentation algorithms and known advantages of medial models are revisited.

Paper Details

Date Published: 20 March 2015
PDF: 6 pages
Proc. SPIE 9413, Medical Imaging 2015: Image Processing, 941345 (20 March 2015); doi: 10.1117/12.2082033
Show Author Affiliations
Johannes Gaa, Leibniz Univ. Hannover (Germany)
Lüder A. Kahrs, Leibniz Univ. Hannover (Germany)
Samuel Müller, Leibniz Univ. Hannover (Germany)
Omid Majdani M.D., Medizinische Hochschule Hannover (Germany)
Tobias Ortmaier, Leibniz Univ. Hannover (Germany)

Published in SPIE Proceedings Vol. 9413:
Medical Imaging 2015: Image Processing
Sébastien Ourselin; Martin A. Styner, Editor(s)

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