Vai trò MRI trong điếc bẩm sinh

The Role of MRI in the congenital hearing

SUMMARY

In the number of cochlear implants being performed and, consequently, there has also been a steady increase in the imaging, done as a part of the preoperative workup of these patients. High-resolution CT scan (HRCT) and MRI are routinely performed prior to cochlear implant surgery. These modalities help assess the status of the inner ear structures. A few patients have significant anomalies, which need to be assessed and understood in detail. MRI is now increasingly being used to study the membranous labyrinth and the cranial nerves; it provides accurate information and exquisite anatomical detail. This paper is a pictorial essay on the various congenital temporal bone anomalies seen in patients being investigated prior to cochlear implant surgery. There are several complex congenital anomalies that are encountered while imaging such patients, needs to follow a clinically oriented classification of these anomalies, which helps the implant surgeon plan the correct management strategy.

Keywords: Congenital hearing loss, Cochlear implant, MRI – CT in congenital temporal bone.