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 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 publicationPhotonic Therapeutics and Diagnostics X
ISBN (Print)9780819498397
StatePublished - 2014
EventPhotonic Therapeutics and Diagnostics X - San Francisco, CA, United States
Duration: Feb 1 2014Feb 2 2014

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


OtherPhotonic Therapeutics and Diagnostics X
Country/TerritoryUnited 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
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging


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