Fig. 7.
Fig. 7A. Targeting photomicrograph for EDS-SEM (energy dispersive x-ray spectroscopy) of the particulate material seen surrounding the electrode sheath in case #3. This 76 year old with bilateral progressive hearing loss of unknown etiology starting at age 10 years underwent a left cochlear implant using a Nucleus 22® device at age 59 years. Word recognition score (NU-6 word score) was 0% at age 50 years.
Fig. 7B. The spectroscopy findings were consistent with platinum as the foreign material seen. See Materials and Methods (pg 4), and Results (pg 5) for more complete description of technique.