Optimal liver stiffness cutoff values measured by MR Elastography for different degrees of liver fibrosis.

kPa, kilopascal; Sn, sensitivity; Sp, specificity; PPV, positive predictive value; NPV, negative predictive value; LR (+), positive likelihood ratio; LR (-), negative likelihood ratio.Concordance represents the rate of patients who were classified correctly (true positive + true negative).*Sn, 100% sensitivity; Sn+Sp, a maximum sum of sensitivity and specificity; Sp, 100% specificity.Optimal liver stiffness cutoff values measured by MR Elastography for different degrees of liver fibrosis.