The Role of Multi-slice CT in Preoperative Assessment of Temporal bone in patients prepared to cochlear implantation

Abstract

Abstract Background MDCT plays a critical role in evaluation and management of different causes of hearing loss which require many therapeutic techniques including cochlear implantation. In general, most causes of hearing impairment are best diagnosed using computed tomography scan of the temporal bone using bone algorithm and windowing techniques. Patients and Methods The study included a total of 20 patients referred to the Radiodiagnosis department from the E.N.T department in EL-Galaa Military Hospital. CT was done for assessment of the cochlear state prior to the cochlear implantation operation. The CT was used to delineate the different cochlear and middle ear anatomy and to orient and modify the surgical strategy. Results Only 18 patients from 20 patients underwent cochlear implantation, the other two cases were diagnosed as Otosclerosis & Bilateral longitudinal fractures. Patients with multiple other congenital anomalies in the external or internal ear had the cochlear implantation in the other ear (To raise the % of success). Conclusion MDCT is the technique of choice in preoperative assessment of patient of SNHL.