Abstract:Objective: To investigate the correlation between ultrasonic image and thyroid functional parameters in Hashimoto’s thyroiditis(HT). Methods: The 2-Dimentional and color Doppler ultrasonographic features of 68 patients clinically diagnosed as HT were analyzed, and the results were compared with thyroid functional parameters(includes FT3, FT4, TSH). Results: All cases were divided into three groups according to the thyroid functional results: normal group, hyperthyroidism group and hypothyroidism group; ultrasonografic features and blood flow grades were different in each group with statistical significance(P<0.01): focal hypoechoic patterns appeared in normal group(7/8, 87.5%), diffuse hyperechoic patterns appeared in hypothyroidism group(4/5, 80%); In CDFI, grade 0 appeared in normal group and hypothyroidism group (21/22, 95.45%), grade Ⅰ~Ⅱ appeared in normal group and hyperthyroidism group(37/42, 88.1%), grade Ⅲ only appeared in hyperthyroidism group(4/4, 100%). The correlation between blood flow grades and thyroid function was statistically significant only in diffuse hypoechoic pattern(P<0.01). Conclusions: The ultrasound image of HT was related to thyroid functional parameters, and could partly reflect thyroid function in helping clinical diagnosis and treatment.