ROLE OF CROSS SECTIONAL IMAGING IN SENSORINEURAL HEARING LOSS

Abstract

Purpose: Aims and objective of the study is to determine the incidence of structural cochlear anomalies in Sensorineural hearing loss and to evaluate them using HRCT and MRI Scan of temporal bone to asses feasibility of cochlear implantation. The study was carried out in the department of radiodiagnosis over a period of 16 mont Method: hs. The study included 114 patients of moderate to profound SNHL to evaluate further using HRCT and MRI Scan of temporal bone. Out of t Results: otal 114 pts in our study 75 pts had normal CT/MRI of temporal bone with no structural abnormalities detected and 39 number of patients had structural malformations which were feasible for cochlear implantation. Small percentage of patients (11%) with common cavity and absent cochlear nerve were not feasible for cochlear implantation. HRCT and MR imaging play an important role in evaluation of congenital heari Conclusion: ng loss by providing crucial information about the inner ear, vestibulocochlear nerve, and brain. Both modalities precisely and accurately delineate the inner ear anatomy and malformations preoperatively in cochlear implant patients.