The sensitivity and specificity of ADC for the diagnosis of malignant lesions were 86.6% and 95.8% if the upper bound of 95% confidence interval was set as a differential level.

• 将恶性病变ADC值95%25可信区间上界1.；16×10-3mm2/s定位为良、恶性病变鉴别的界值；诊断敏感性为86