Combined application of contrast-enhanced US and acoustic radiation force impulse imaging in#br# differential diagnosis of solid hypo-echoic thyroid nodules
Department of Ultrasound, Huadong Hospital of Fudan University, Shanghai 200040, China
Abstract:Objective: To assess the value of acoustic radiation force impulse(ARFI), contrast-enhanced US(CEUS) and their combined application in differential diagnosis of solid hypo-echoic thyroid nodules. Methods: ARFI and CEUS were performed in 47 patients with 62 thyroid nodules. The results of ARFI, CEUS and their combined application, which were classified as benign or malignant ones, were compared with pathological findings. The diagnostic results of ARFI, CEUS and ARFI+CEUS were evaluated and compared. Result: The sensitivity, specificity, PPV, NPV and accuracy of the ARFI for differential diagnosis were 82.4%, 82.1%, 84.8%, 79.3%, and 82.3%, respectively. The sensitivity, specificity, PPV, NPV and accuracy of the CEUS for differential diagnosis were 88.2%, 78.6%, 83.3%, 84.6% and 83.9%, respectively. The sensitivity, specificity, PPV, NPV and accuracy of the ARFI+CEUS for differential diagnosis were 94.1%, 96.4%, 97.0%, 93.1% and 95.2%, respectively. Conclusions: ARFI and CEUS have high value in differential diagnosis of solid hypo-echoic thyroid nodules, the combined application of two methods can be helpful to improve the diagnostic accuracy.
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