Figure 3.

ROC analysis for differentiating none-to-mild fibrosis from moderate-to-severe fibrosis. ROC analysis shows that T₁ value (AUC = 0.716, p = 0.004) has moderate accuracy in distinguishing none-to-mild fibrosis from moderate-to-severe fibrosis in all 64 specimens, while normalized MTR (AUC = 0.881, p < 0.001) shows good accuracy in differentiating the degree of bowel fibrosis; the difference between the T₁ value and normalized MTR is significant (z = −2.037, p = 0.042). AUC = area under the curve; MTR = magnetization transfer ratio; ROC = receiver operating characteristic; T₁ = longitudinal relaxation time.