Preoperative imaging is essential in the evaluation of all cochlear implant (CI) candidates, combining magnetic resonance imaging (MRI) and computed tomography (CT) to provide complementary diagnostic information. The integration of MRI and CT findings allows clinicians to identify contraindications, plan the optimal surgical approach, and reduce complications, ultimately enhancing the safety and efficacy of cochlear implantation. The readers will be guided through the details of both radiological procedures, emphasizing their role in pre-operative study and planning of CI candidates. The correct use of radiological tools is of utmost importance prior to every CI surgical approach.