['To evaluate the cochlear implant operation by the use of X-ray or CR.', 'There are 15 ears 15 cases which were completed the cochlear implant operation, after operation the implant electrode array was shown by the use of X-ray or CR.', 'The shape and station of those were normal, average insered depth was 23.05 mm, come up to provide standard.'] Do [ Use X-ray or CR to evaluate the operation result of the cochlear implant ]?