Purpose: To evaluate the efficacy of apparent diffusion coefficient (ADC) calculation in differentiation between malignant and benign thyroid nodules.
Methods And Materials: A prospective study was conducted in 52 patients. Diffusion-weighted echoplanar imaging was performed and b factors were taken as 0 and 400 s/mm(2).
Results: The mean ADC value for malignant thyroid nodules was 0.829±0.179×10(-3) mm(2)/s and that for benign thyroid nodules was 1.984±0.482×10(-3) mm(2)/s. The mean ADC value for malignant nodules was significantly lower than that for benign nodules (P=.0001).
Conclusion: ADC value calculation is an effective method in differentiation of malignant thyroid nodules from benign ones.
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