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'Cochlear view' plain radiograph: A simple reliable positioning method
Stephanie Elyse Ambrose1, Norman Wendell Todd1
1a Department of Otolaryngology - Head and Neck Surgery , Emory University School of Medicine , Atlanta , GA , USA.
Cochlear Implants International
|October 11, 2017
Summary
Accurate assessment of cochlear implant electrode insertion requires precise patient positioning for the "cochlear view" radiograph. This technique ensures reliable evaluation of electrode placement within the cochlea.
Area of Science:
- Radiology
- Otolaryngology
- Neurosurgery
Background:
- Cochlear implant electrode insertion depth and coiling are critical for surgical success.
- Standard radiographic views can be inaccurate due to patient positioning variability.
- The 'cochlear view' is essential for assessing electrode array placement.
Purpose of the Study:
- To present a reliable patient positioning technique for accurate intraoperative radiographic evaluation of cochlear implant electrode insertion.
- To improve the accuracy and inter-observer agreement in assessing cochlear electrode placement.
Main Methods:
- Patient head is rolled 60° and stabilized.
- Operating table is rotated 15° towards the operated ear.
- X-ray beam is directed through the modiolus axis, perpendicular to the basal turn of the cochlea.
Main Results:
- The described positioning technique optimizes the 'cochlear view' radiograph.
- Accurate positioning ensures the X-ray beam aligns with the modiolus axis.
- This method enhances the reliability of assessing electrode array coiling and insertion depth.
Conclusions:
- The presented technique for achieving the 'cochlear view' is simple and reliable.
- This method maximizes the accuracy of postoperative radiographs for cochlear electrode evaluation.
- Improved radiographic assessment aids in confirming correct cochlear implant placement.
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