3D quantitative measurement for multi-spiral CT images of round window area related structure

Objective: Round window pathway is an important surgical approach in modern ear microsurgery and ear neurosurgery. Detailed grasp of the round window area anatomy and related parameters is key to the success of such surgeries. Methods: In order to provide comprehensive and accurate anatomical information and methods for successful surgery through the round window approach, 64-slice spiral CT multi-planar reconstruction (MPR) technology was adopted in three-dimensional quantitative measurement of the round window area structural anatomies of adults and children, respectively. Measurement data of different age groups were statistically compared, and measurement data of adult group were compared with that of cadaveric head specimens in this study. Results: The results showed that round window area related structures from 3D quantitative measurement by multi-spiral CT with MPR could represent actual anatomical structure measurement results, and provide accurate imaging anatomy information for anatomical positioning in round window area surgery. Conclusions: Facial nerve mastoid is frontward, and round window surgical area can be expanded downward, but caution should be taken to avoid damages to jugular bulb.