[Plain X-ray for locations of intracochlear electrode arrays during cochlear implantation].

OBJECTIVE To evaluate the position and shape of inserted electrode arrays by plain X-ray during cochlear implantation. METHOD Cochlear view of implanted electrode arrays by plain X-ray were observed during operation in 54 patients received cochlear implant. RESULT The image in cochlear view could provide the information about position and shape of inserted electrode arrays. The spiral-shape electrode arrays without distortion and folding were found in 52 cases. The complete insertion of intracochlear electrode in these patients were confirmed by surgery. Of 54 cases, the other 2 cases showed improper position and C-shape of intracochlear electrodes, one was partial insertion and the other was bending inside the cochlea. The bending electrode array was reinserted immediately during operation. CONCLUSION Routine plain X-ray after inserted electrode during operation was a best way of knowing the shape and depth of the electrode array, especial for the difficult cochlear implantation, and also could avoided anesthetization again.