Fig. 6From: Predictors of round window accessibility for adult cochlear implantation based on pre-operative CT scan: a prospective observational studyMean distance between the axis of the horizontal semicircular canal and the lowest level of the tegmen on coronal CT images among the three groups corresponding to the degree of difficulty associated with mastoidectomy. *: p = 0.05 vs “Easy”, **: p < 0.01 vs “Easy”Back to article page