CT Evaluation of Labyrinth Structures in Patients With Incomplete Partition Type II Anomaly

CT measurements of inner ear structures in SNHL could help to diagnose IP-II anomalies, especially in patients with equivocal audiological and radiologic findings. This study validates CT measurements in the evaluation of IP-II anomaly conducted by histologic specimens and MRI in previous studies. Lateral cochlear measurements with an angle of >130 degrees, a depth of ≤0.35 mm, and a height of >3.15 mm could support the diagnosis of the IP-II anomaly. These measurements are also reproducible.