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  • Title: Evaluating diagnostic yield of computed tomography (CT) and magnetic resonance imaging (MRI) in pediatric unilateral sensorineural hearing loss.
    Author: Shah J, Pham GN, Zhang J, Pakanati K, Raol N, Ongkasuwan J, Hopkins B, Anne S.
    Journal: Int J Pediatr Otorhinolaryngol; 2018 Dec; 115():41-44. PubMed ID: 30368390.
    Abstract:
    INTRODUCTION: Options for imaging for evaluation of pediatric patients with unilateral sensorineural hearing loss (USNHL) include computed tomography (CT) and magnetic resonance imaging (MRI). Although both CT and MR imaging provide valuable information in the evaluation of pediatric patients with USNHL, debate remains regarding which imaging modality is most ideal and should be the preferred study for these children. The objective of this study is to evaluate and compare the diagnostic yield of CT versus MRI in children with USNHL. METHODS: A multi-institutional retrospective chart review was conducted. Pediatric patients with hearing loss (diagnosis codes 389.00-389.22) seen between 2010 and 2012 at three tertiary care centers were identified. Only patients with USNHL and imaging studies were reviewed and results of CT and MRI for each patient were examined and compared. Cochleovestibular or central nervous system findings known to directly correlate to SNHL were noted as positive findings on imaging. McNemar's test was used to compare patients with positive CT and MRI results. RESULTS: A total of 219 patients between the ages of 0-18 years with USNHL who underwent CT and/or MRI were identified. Imaging abnormalities were found in 41/96 patients who underwent MRI with overall diagnostic yield of 42.7% and 69 of 188 patients who underwent CT with overall diagnostic yield of 36.7%. For patients who underwent both imaging modalities (n = 65), there was no statistically significant difference in positive findings detected by CT vs MRI (p > 0.05). CONCLUSIONS: Both CT and MR imaging have similar overall diagnostic yield when used to evaluate children with USNHL. Parents and patients should be counseled regarding cost, test duration, radiation exposure, need for sedation, and diagnostic accuracy associated with each imaging modality and these factors should be considered to select the appropriate diagnostic study.
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