Radiologically assisted navigation in cochlear implantation for X-linked deafness malformation

Area of Science:

• Otolaryngology
• Neurosurgery
• Medical Imaging

Background:

• X-linked deafness syndrome presents complex inner ear malformations, including shortened cochlea and aberrant facial nerve anatomy.
• Cochlear implantation in these cases risks unintended electrode insertion into the internal auditory canal.

Purpose of the Study:

• To evaluate the efficacy of intraoperative three dimensional-volume tomography (3D-VT)-based navigation and control for cochlear implantation in X-linked deafness syndrome.

Main Methods:

• A novel surgical approach utilizing intraoperative 3D-VT for navigation and direct electrode placement control was employed.
• The navigation dataset was generated from intraoperative 3D-VT after mastoidectomy and posterior tympanotomy, guiding cochleostomy and electrode insertion.

Main Results:

• Intraoperative 3D-VT allowed direct visualization and correction of electrode position, achieving successful intracochlear insertion.
• The navigation-assisted approach enhanced surgical precision and reduced the risk of malplacement.

Conclusions:

• Intraoperative 3D-VT-assisted navigation and control are effective in facilitating cochlear implantation for X-linked deafness malformations.
• This method improves precision, minimizes risks of improper electrode placement, and potentially reduces the need for revision surgeries.