Abstract: Objective The analysis made by comparing the Ultrasound characteristics with pathologic result of thyroid tumor,improve coincidence rate of diagnosis by Color Doppler Ultrasound.Methods The paper reviewed 150 patients of thyroid tumor that have been confirmed by postoperative pathology,including of 37 thyroid adenomas,78 nodular goiters,35 thyroid carcinoma.Analysis made by comparing the 2D and the color doppler ultrasound characteristics with pathologic examination.Results The interior and ambitus Vmax and RI of thyroid carcinoma are obviously highly thyroid adenomas and nodular goiters.The specificity of diagnosis is highly,such as peplos and circularity blood of the thyroid adenomas;low echo-level and calcification of thyroid carcinoma.But thyroid adenomas and nodular goiters easily misdiagnosis because of diverseness tumor.Conclusion Color doppler ultrasound may diagnose the thyroid tumor properties(substantive or cystic mass、mixed),the benign and malignancy,observing blood b-flow conditions and the internal distribution of operation treatment,has certain directive significance,and it is a simple,inexpensive,accurate and good repeatability,inspection method for routine inspection of thyroid preoperative.

Key words: Thyroid tumor, Color doppler ultrasound, Pathologic comparison