Abstract
OBJECTIVES: To investigate whether there is a difference in frequency parameters between anatomy-based fitting (ABF) using a preoperative CT scan and clinically based fitting (CBF).
STUDY DESIGN: Monocentric retrospective registry study.
SETTING: Tertiary academic medical center.
PATIENTS: 23 CI recipients between 2004 and 2021.
INTERVENTIONS: CI.
MAIN OUTCOME MEASURES: Comparison between frequency maps: CBF versus ABF. The frequency parameters used for ABF were estimated based on preoperative CT scans and implanted electrodes.
RESULTS: All electrode contact frequencies were significantly different between ABF and CBF maps. When the dataset was manually analyzed, 84% (n = 233) of the predicted electrode location frequencies were outside their allocated frequency band in the clinical fitting map.
CONCLUSIONS: Setting the CI filter bank frequencies based on preoperative electrode location estimates could be a useful alternative when postoperative CT or DVT imaging is not feasible or unavailable. This can serve as a good starting point when trying to reduce frequency-to-place mismatch between frequency allocations of the fitting filter bank and the tonotopy of the cochlea.
| Original language | German (Austria) |
|---|---|
| Pages (from-to) | 1095-1100 |
| Number of pages | 6 |
| Journal | Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology |
| Volume | 46 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 01 Oct 2025 |
Fields of science
- 302 Clinical Medicine