Indian Journal of Radiology Indian Journal of Radiology  

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HEAD AND NECK Table of Contents   
Year : 2003  |  Volume : 13  |  Issue : 4  |  Page : 371-378
Imaging of cochlear implants


Classified Specialist (Radiodiagnosis), Mumbai-400005, India

Correspondence Address:
I K Indrajit
Classified Specialist (Radiodiagnosis), Mumbai-400005
India
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Source of Support: None, Conflict of Interest: None


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Traditionally, cochlear implants are restrictedly perceived by radiologists as devices absolutely contraindicated for MRI studies. With increasing cochlear implantations carried out world over, and the increasing availability of Digital Radiography and Multislice CT, imaging plays a key role, both in preoperative period and following implantation [1]. Essentially, cochlear implants are medical devices that electrically stimulate the auditory nerve in the cochlea. Designed to allow patients with severe hearing loss to perceive sound, cochlear implant systems contain internal electrode array that is placed inside the cochlea. Computed tomography (CT) is considered the modality of choice for accurate imaging of the bony labyrinth. Of late, Multislice CT applications not only accurately displays complex three-dimensional anatomic structures of inner ear and contents of middle ear cavity, but also generates interactively volume rendered images of labyrinth. This review article demystifies Cochlear Implants and illustratively describes the role of imaging generated by Digital Radiography and Multislice CT.


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