RESUMO
Objective:To evaluate 2D ultrasonography(2DUS), color Doppler flowing imaging(CDFI) and color Doppler energy (CDE) in the differential diagnosis of benign and malignant tumors of salivary glands.Methods:According to the characters of 2DUS and CDFI examination, benign and malignant tumors in 142 cases of salivary glands were distinguished. The results of ultrasound examination and postoperative biopsy were checked and compared. Meanwhile the same tumor's blood flow information and hemodynamics index were compared. Results:In 2DUS examination, the inter echo and post echo of benign and malignant were different. In CDFI examination, the blood flow form could be displayed clearly. Besides Warthin tumors, the blood supply ranking of benign tumors was usually levelⅠor Ⅱ-(78.7%), and that of malignant tumors was levelⅡ+ or Ⅲ(80.0%). The artery's peak systolic velocity(PSV) of malignant tumors was higher than that of benign tumors. The rates(%) of sensitivity, specificity,accuracy,false negative, false positive, positive predicting and negative predicting of 2DUS were 70.2,87.4,81.7,29.8,12.6,73.3 and 85.6,those of CDFI 80.9,65.2,70.4,19.1,34.7,53.0 and 87.3,those of the integrated usage of ultrasonic methods 89.3,90.5,90.1,10.6,9.5,82.4 and 94.5 respectively.Conclusion:With the integrated usage of ultrasonic methods, higher accuracy of differential diagnosis for benign and malignant salivary glands tumors may be obtained.