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(a,b). Receiver operating characteristic (ROC) analysis. (a) The ROC curve shows that pre-stenotic upstream bowel dilatation has a high accuracy with AUC 0.75 (p < 0.001) for discriminating between none and mild/moderate–severe bowel wall fibrosis. (b) The ROC curve demonstrates that ADC shows a high accuracy with AUC 0.97 (p < 0.001) for discriminating between none and mild/moderate–severe bowel wall fibrosis. ADC = apparent diffusion coefficient, AUC = area under ROC curve.
