25 pediatric patients who underwent cochlear implantation were imaged using DECT (15 patients) and MDCT (10 patients), and the image quality and radiation dose of DECT were compared to those of MDCT. Measurement of EMD was done for 5 electrodes and the results were correlated with neural response telemetry (NRT) and behavioural mapping levels.
A statistically significant difference between the radiation dose of DECT and MDCT was confirmed (p = 0.002) without a statistically significant difference in images quality (weighted K = −0.129 and PABAK = 0.533).
Statistically significant correlations were found between EMD and NRT threshold, T (threshold) and C (maximum comfortable) levels with p = <0.01.
DECT accurately detects the electrode position with low radiation dose which helps in CI fitting.