Cochlear implants: three-dimensional localization by means of coregistration of CT and conventional radiographs

Radiology. 2001 Nov;221(2):543-9. doi: 10.1148/radiol.2212010275.


With use of radiopaque implanted objects as internal fiducial markers, the authors developed and evaluated a technique for coregistering computed tomographic (CT) and computed radiographic images to help determine three-dimensional location information for implant electrodes in the cochlea in phantoms and patients. Three-dimensional positional data from CT were assigned on a radiograph, which permitted identification of individual cochlear electrode locations that were not depicted at CT.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Aged
  • Cochlea / diagnostic imaging*
  • Cochlear Implants*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Phantoms, Imaging*
  • Tomography, X-Ray Computed / methods*