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Atlas-Based Segmentation of Temporal Bone Anatomy

  • Kimerly A. PowellEmail author
  • Tong Liang
  • Brad Hittle
  • Don Stredney
  • Thomas Kerwin
  • Gregory J. Wiet
Original Article
  • 316 Downloads

Abstract

Purpose

To develop a time-efficient automated segmentation approach that could identify critical structures in the temporal bone for visual enhancement and use in surgical simulation software.

Methods

An atlas-based segmentation approach was developed to segment the cochlea, ossicles, semicircular canals (SCCs), and facial nerve in normal temporal bone CT images. This approach was tested in images of 26 cadaver bones (13 left, 13 right). The results of the automated segmentation were compared to manual segmentation visually and using DICE metric, average Hausdorff distance, and volume similarity.

Results

The DICE metrics were greater than 0.8 for the cochlea, malleus, incus, and the SCCs combined. It was slightly lower for the facial nerve. The average Hausdorff distance was less than one voxel for all structures, and the volume similarity was 0.86 or greater for all structures except the stapes.

Conclusions

The atlas-based approach with rigid body registration of the otic capsule was successful in segmenting critical structures of temporal bone anatomy for use in surgical simulation software.

Keywords

Atlas-based segmentation Image registration Surgical simulation Temporal bone anatomy 

Notes

Acknowledgements

This research was supported by NIDCD/NIH 1R01-DC011321.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

For this type of study, formal consent is not required.

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Copyright information

© CARS 2017

Authors and Affiliations

  1. 1.Department of Biomedical InformaticsThe Ohio State UniversityColumbusUSA
  2. 2.Department of Electrical and Computer EngineeringThe Ohio State UniversityColumbusUSA
  3. 3.Ohio Supercomputer CenterColumbusUSA
  4. 4.Department of OtolaryngologyThe Ohio State University and Nationwide Children’s HospitalColumbusUSA
  5. 5.Department of OtolaryngologyThe Ohio State UniversityColumbusUSA

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