Objectives: This study aimed to retrospectively investigate temporal magnetic resonance imaging (MRI) findings in patients with sudden hearing loss (SHL) to determine the possible etiopathogenesis and provide prognostic information. Patients and Methods: Sixty-eight adult patients diagnosed with SHL between January 2015 and December 2021 were included in the study. Patient files were reviewed retrospectively, and their age, sex, comorbid disease information, MRI scan time, and MRI findings were investigated. Results: In the MRI examination, one (1.4%) patient with cerebellopontine corner tumor, one (1.4%) patient with intracranial mass, one (1.4%) patient with acute otitis/mastoiditis complication, and one (1.4%) patient with intracranial hemorrhage were excluded due to their diagnosis. Abnormal enhancement was detected in 10 (15.6%) of the remaining 64 patients (47 males, 17 females; mean age: 51.7±17.3 years; range, 14 to 84 years). It was determined that the MRI results were obtained after a mean of 15.2±11.4 days and the sensitivity for the presence of positive pathological findings on the seventh and 14th days decreased from 70% to 0% (receiver operating characteristic analysis; area under the curve =0.209, 95% confidence interval 0.091-0.328, p<0.004). Conclusion: Performing MRI in patients with SHL within a short time of diagnosis and before starting treatment will provide more information on the etiopathogenesis.