High-resolution Flat-panel Computed Tomography Analysis of Intrascalar Position and Electrode Contact Orientation: A Feasibility Study

In vivo mapping of intrascalar electrode positioning is possible using FPCT. Transformation onto a standard cochlear system produces anatomically relevant measurements within expected ranges. Moreover, we have measured electrode contact orientation based on imaging characteristics and introduced a model for describing directionality of electrode contacts. In future studies, we will focus on correlating these rotational measurements to electrophysiologic and psychophysical parameters, including electrode current spread, activation settings, and hearing performance.