Figure 3From: The use of semi-quantitative ultrasound elastosonography in combination with conventional ultrasonography and contrast-enhanced ultrasonography in the assessment of malignancy risk of thyroid nodules with indeterminate cytology ROC curve created with histology as a reference for distinguishing malignant from benign Thy 3 nodules according to CEUS. The upper panel reports the P index; the best cut-off was <0.99. The lower panel reports the TTP index; the best cut-off was >0.98.Back to article page