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E1962. Deaf and Young? Multimodality Imaging in Inner Ear Malformations
Authors
  1. Shivaprakash Hiremath; The Ottawa Hospital
  2. Neetika Gupta; Children's Hospital of Eastern Ontario
  3. Paulo Puac Polanco; The Ottawa Hospital
  4. Elka Miller; Children's Hospital of Eastern Ontario
  5. Santanu Chakraborty; The Ottawa Hospital
Background
About 20% of children presenting with sensorineural hearing loss have detectable imaging abnormalities. Imaging plays a vital role in the identification of anomalies that preclude cochlear implantation, assess for the presence of luminal obstruction that may lead to complicated surgery and identification of abnormalities leading to surgical complications. This educational exhibit aims to describe the imaging strategies, inner ear anatomy, algorithm for evaluation of inner ear anomalies, the role of imaging findings in management along with a highlight on the radiological reporting checklist.

Educational Goals / Teaching Points
To illustrate the relevant anatomy of the inner ear and imaging strategies in inner ear malformations (IEMs); demonstrate the various IEMs involving the cochlea, vestibule, and the semicircular canals, internal auditory canal, and the cochlear nerves; and describe the algorithmic approach for evaluation of the IEMs and highlight the imaging findings which influence surgical management.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
The CT and MRI complement each other in the imaging of inner ear malformations. We would illustrate the imaging anatomy of the inner ear, the imaging findings in IEMs based on the recent classification system with highlight on the surgical implications of the imaging findings in IEMs.

Conclusion
The early and precise diagnosis of the IEMs that are amenable to surgery forms the basis for imaging prior to surgical management of hearing loss in children. The advances in the CT and MR imaging modalities with increased awareness of the specific types of IEMs facilitate surgical decision making, avoid complications, and improve the prognostic outcome.