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J Biomed Opt. 2014 May;19(5):057004. doi: 10.1117/1.JBO.19.5.057004.

Robot-assisted three-dimensional registration for cochlear implant surgery using a common-path swept-source optical coherence tomography probe.

Author information

  • 1Johns Hopkins University, Whiting School of Engineering, 3400 North Charles Street, Baltimore, Maryland 21218.
  • 2Johns Hopkins University, Department of Otolaryngology-Head and Neck Surgery, 601 North Caroline Street, Baltimore, Maryland 21287.
  • 3University of Southern California, Department of Otolaryngology-Head and Neck Surgery, 1520 San Pablo Street, Suite 4600, Los Angeles, California 90033.


Cochlear implantation offers the potential to restore sensitive hearing in patients with severe to profound deafness. However, surgical placement of the electrode array within the cochlea can produce trauma to sensorineural components, particularly if the initial turn of the cochlea is not successfully navigated as the array is advanced. In this work, we present a robot-mounted common-path swept-source optical coherence tomography endoscopic platform for three-dimensional (3-D) optical coherence tomography (OCT) registration and preoperative surgical planning for cochlear implant surgery. The platform is composed of a common-path 600-μm diameter fiber optic rotary probe attached to a five degrees of freedom robot capable of 1 μm precision movement. The system is tested on a dry fixed ex vivo human temporal bone, and we demonstrate the feasibility of a 3-D OCT registration of the cochlea to accurately describe the spatial and angular profiles of the canal formed by the scala tympani into the first cochlear turn.

[PubMed - indexed for MEDLINE]
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