Fig. 7.

Postoperative MRI (axial, T1-w + Gd) for the two patients with poor hearing outcomes. a Patient 3, at 2 years after removal of the intracochlear tumor parts and CI. Imaging of the IAC and the inner ear was possible by placement of the receiver coil of the Synchrony implant at a distance of approximately 9 cm from the outer ear canal. The tumor part in the fundus of the IAC had increased in size only very slightly by 0.5 mm (compare preoperative MRI: Fig. 2e). b Patient 6, at 2 years and 5 months after removal of the intravestibulocochlear tumor parts and CI. Because of pain and heat development, the magnet of the CI512 model had to be temporarily removed from the patient under local anesthesia. The MRI showed growth of the tumor parts in the IAC by 3.6 mm (compare preoperative MRI: Fig. 4c). There was no tumor recurrence in the inner ear in the two patients. CI cochlear implant, w weighted, → tumor in the IAC