The relationship between the degree of asymmetry and the radiologist's classification. This plot suggests that there is no hard threshold below which the radiologist is unable to appropriately identify a case of unilateral mesial temporal sclerosis. In fact, in those cases for which the hippocampal volumes differed by >5%, 10%, and 20%, the radiologist's classification had an estimate accuracy of 75.0%, 78.9%, and 84.2%, respectively.