Cochlear shape description and analyzing via medial models

verfasst von

Johannes Gaa, Lüder A. Kahrs, Samuel Müller, Omid Majdani, Tobias Ortmaier

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.

Organisationseinheit(en)

Institut für Mechatronische Systeme

Externe Organisation(en)

Medizinische Hochschule Hannover (MHH)

Typ

Aufsatz in Konferenzband

Publikationsdatum

2015

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektronische, optische und magnetische Materialien, Biomaterialien, Atom- und Molekularphysik sowie Optik, Radiologie, Nuklearmedizin und Bildgebung

Elektronische Version(en)

https://doi.org/10.1117/12.2082033 (Zugang: Unbekannt)