Cochlear shape description and analyzing via medial models

Johannes Gaa; Lüder A. Kahrs; Samuel Müller; Omid Majdani M.D.; Tobias Ortmaier

doi:10.1117/12.2082033

20 March 2015 Cochlear shape description and analyzing via medial models

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

Proceedings Volume 9413, Medical Imaging 2015: Image Processing; 941345 (2015) https://doi.org/10.1117/12.2082033
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

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.

Citation Download Citation

Johannes Gaa, Lüder A. Kahrs, Samuel Müller, Omid Majdani M.D., and Tobias Ortmaier "Cochlear shape description and analyzing via medial models", Proc. SPIE 9413, Medical Imaging 2015: Image Processing, 941345 (20 March 2015); https://doi.org/10.1117/12.2082033

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