Prediction of Difficult Round Window Visibility during Cochlear Implantation via a Reformatted CT Facial Recess View: A Retrospective Study with Surgical Correlation.

ABSTRACT:

Background and purpose

Cochlear implant surgery is performed commonly through the facial recess via the round window (RW) approach. This study aims to evaluate the utility of reformatting the preoperative CT temporal bone scan into a CT facial recess view in alerting surgeons to a potentially difficult surgery with poorly visualized RW.

Materials and methods

This is a retrospective study of 41 patients (43 ears), who had undergone cochlear implant surgery. Intraoperative findings of RW position relative to second genu-mastoid portion of facial nerve, and RW membrane orientation were recorded by the surgeons. Preoperative CTs were analysed by 2 radiologists in both axial and reformatted planes, with the later simulating the surgeon's view via the facial recess. Radiologic ass

SUBMITTER: Kheok SW 

PROVIDER: S-EPMC11979823 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature