[Postoperative radiography for cochlear implantation].
OBJECTIVE
To define a spatial position of the cochlea in the skull base and to design an appropriate method of skull radiography for demonstration of the multichannel intracochlear electrode array.


METHODS
Measure the angle between the basal turn of the cochlear and the median sagittal line on the axial plane CT from 26 children candidates of cochlear implant and 32 adults.


RESULTS
The angle between the axis of the cochlear and the median sagittal line varied from 40 degrees to 68 degrees, the average is 52.66 degrees. The average angle in children is 52.52 degrees (s = 7.07) and 52.80 degrees (s = 5.78) in the adults. The difference between the two group has no significance (P > 0.05).


CONCLUSIONS
The plain radiography cochlear view gives a clear image of the whole intracochlear electrode array and each individual electrode, it is useful for evaluating the depth and exact position of the electrodes, managing frequency mapping and optimizing speech processing strategies, it can be widely used in cochlear implant clinics and research.
Wang
Wuqing
W
Department of Otolaryngology, EENT Hospital of Fudan University, Shanghai 200031.
Chen
Yijing
Y
Wang
Zhengmin
Z
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003051:Cochlea / Q000000981:diagnostic imaging* / Q000601:surgery; D019929:Cochlear Implantation; D003054:Cochlear Implants; D004567:Electrodes, Implanted; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D011859:Radiography; D012886:Skull / Q000000981:diagnostic imaging