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[Postoperative radiography for cochlear implantation]
Wuqing Wang1, Yijing Chen, Zhengmin Wang
1Department of Otolaryngology, EENT Hospital of Fudan University, Shanghai 200031.
Lin Chuang Er Bi Yan Hou Ke Za Zhi = Journal of Clinical Otorhinolaryngology
|July 4, 2003
Summary
This study defines the cochlear position in the skull base, establishing a standard skull radiography method for visualizing multichannel intracochlear electrode arrays in cochlear implant patients.
Area of Science:
- Otolaryngology
- Neurosurgery
- Radiology
- Biomedical Engineering
Background:
- Accurate visualization of intracochlear electrode arrays is crucial for successful cochlear implantation.
- Existing imaging techniques may not optimally demonstrate the spatial relationship between the cochlea and electrode placement.
Purpose of the Study:
- To determine the spatial orientation of the cochlea within the skull base.
- To develop an optimized skull radiography technique for imaging multichannel intracochlear electrode arrays.
Main Methods:
- Axial plane computed tomography (CT) scans were used to measure the angle between the cochlear basal turn and the median sagittal line.
- Measurements were performed on 26 pediatric and 32 adult candidates for cochlear implantation.
Main Results:
- The angle between the cochlear axis and the median sagittal line ranged from 40 to 68 degrees, averaging 52.66 degrees.
- No statistically significant difference in average angle was observed between pediatric (52.52 degrees) and adult (52.80 degrees) groups (P > 0.05).
Conclusions:
- Plain radiography provides a clear view of the entire intracochlear electrode array and individual electrodes.
- This imaging method is valuable for assessing electrode depth and precise positioning, aiding in frequency mapping and speech processing optimization.
- The technique is applicable in cochlear implant clinics and research settings.