3D optical coherence tomography image registration for guiding cochlear implant insertion

Gyeong Woo Cheon, Hyun Woo Jeong, Preetham Chalasani, Wade W Chien, Iulian Iordachita, Russell H Taylor, John Niparko, Jin U. Kang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In cochlear implant surgery, an electrode array is inserted into the cochlear canal to restore hearing to a person who is profoundly deaf or significantly hearing impaired. One critical part of the procedure is the insertion of the electrode array, which looks like a thin wire, into the cochlear canal. Although X-ray or computed tomography (CT) could be used as a reference to evaluate the pathway of the whole electrode array, there is no way to depict the intra-cochlear canal and basal turn intra-operatively to help guide insertion of the electrode array. Optical coherent tomography (OCT) is a highly effective way of visualizing internal structures of cochlea. Swept source OCT (SSOCT) having center wavelength of 1.3 micron and 2D Galvonometer mirrors was used to achieve 7-mm depth 3-D imaging. Graphics processing unit (GPU), OpenGL, C++ and C# were integrated for real-time volumetric rendering simultaneously. The 3D volume images taken by the OCT system were assembled and registered which could be used to guide a cochlear implant. We performed a feasibility study using both dry and wet temporal bones and the result is presented.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISBN (Print)9780819498397
StatePublished - 2014
EventPhotonic Therapeutics and Diagnostics X - San Francisco, CA, United States
Duration: Feb 1 2014Feb 2 2014


OtherPhotonic Therapeutics and Diagnostics X
CountryUnited States
CitySan Francisco, CA



  • 3D rendering
  • Cochlear
  • GPU
  • OpenGL
  • Optical coherent tomography
  • SS-OCT
  • Temporal bone

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging
  • Atomic and Molecular Physics, and Optics

Cite this

Cheon, G. W., Jeong, H. W., Chalasani, P., Chien, W. W., Iordachita, I., Taylor, R. H., Niparko, J., & Kang, J. U. (2014). 3D optical coherence tomography image registration for guiding cochlear implant insertion. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 8926). [89261Z] SPIE. https://doi.org/10.1117/12.2040594