Abstract
The aim of the study was to obtain volumetric data of the components of the inner ear using three-dimensional reconstruction of high-resolution cone-beam computed tomography (CBCT) images. Two hundred three CBCT image series of the temporal bone from 118 anatomically normal patients (55 women and 63 men; mean age: 49.4 ± 20.4 years) with different suspected disorders were included in this study. Normative volumetric measurements of the inner ear, the cochlea, the semicircular canals (SSC), and the vestibule were determined using a semi-automated reconstruction method of the Workstation. Volumetric measurements were successfully completed in all 118 patients. Mean inner ear, cochlear, and vestibule volumes were statistically significantly larger in males than in females on both sides (p < 0.001). Regarding the semicircular canals, no statistically significant (p = 0.053) volume difference was found. The difference between the volumes on both sides was not significant. No correlation between the patient’s age and the volume of the compartments was seen (p > 0.05). There was no significant difference between mean bony inner ear volumes when the clinical diagnoses were compared (p > 0.05 for all clinical diagnoses and volumes). Our study concluded that three-dimensional reconstruction and assessment of the volumetric measurements of the inner ear can be obtained using high-resolution CBCT imaging.
Highlights
Various pathological disorders of the inner ear are associated with increased or decreased organ volume, for which exactSN Compr
All volumetric measurements were reported in cubic millimeters
The results were provided as mean values with the corresponding standard deviations (SD). p values less than 0.05 were considered statistically significant
Summary
Various pathological disorders of the inner ear are associated with increased or decreased organ volume, for which exact. (2020) 2:2178–2184 using the latest CBCT data. MRI is often used for the fluid parts of the inner ear. Our study was performed to assess volumetric measurements of the bony inner ear components using three-dimensional (3D) reconstruction of highresolution CBCT data and to test the correlation of the volume with respect to patient age, sex, and clinical diagnosis
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