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ROC analyses. A. A wide range of elasticity cut-off values were tested as criteria for distinguishing benign from malignant neoplasms. B. A wide range of elasticity cut-off values were tested on known malignant tumours as criteria for distinguishing “Gleason ≤6” from “Gleason >6” neoplasms. For each plot the point corresponding to the highest Youden index is indicated. For details, see text
