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Table 4 Validity of ADC for differentiation between benign and malignant thyroid nodules

From: Diagnostic accuracy of B-mode ultrasound, ultrasound elastography and diffusion weighted MRI in differentiation of thyroid nodules (prospective study)

 

Benign

n = 36

Malignant

n = 20

test of significance

ADC value * 10−3

  

t = 9.55

Mean ± SD

2.03 ± 0.64

0.609 ± 0.298

P < 0.001*

Median (range)

1.9 (1.3–3.8)

0.69 (0.16–0.9)

 
 

AUC (95% CI)

P Value

Cut off point

Sensitivity

Specificity

PPV

NPV

Accuracy

ADC (× 10−3)

1.0 (1.0–1.0)

 < 0.001*

1.35

100.0

94.4%

100.0%

90.9%

96.4%

  1. t, Student t test; *, statistically significant; P, Probability; AUC, Area under curve; PPV, Positive predictive value; NPV, Negative predictive value