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Time-intensity curve of a typical malignant lymph node in NPC patient. The red ROI is malignant lymph node, and the red line is corresponding TIC curve. The yellow ROI is the tissue around the lesion, and the yellow line is the corresponding TIC curve. The malignant lymph node was presented as inhomogeneous enhancement, and PI, TP, and AUC of malignant lymph node were significantly higher than those in benign lymph node.
