Characteristics of high frequency ultrasonography and color Doppler flow imaging in thyroid nodules

ZHENG Yanyan; WANG Hongxu; LIU Shaoling; ZHANG Guoquan

Abstract：Objective To investigate the characteristics of high frequency ultrasound and color Doppler ultrasound for thyroid nodules and their clinical usefulness for diagnosis and treatment .Methods The study involves 90 patients collected in our hospi-tal from April 2014 to April 2017 , compromised of 50 cases of benign nodules and 40 cases of malignant nodules respectively .All the patients underwent high frequency ultrasound and color Doppler ultrasound examination before surgical operation .The charac-teristics of high frequency ultrasound and several parameters of color Doppler ultrasound were recorded and compared with patholo -gy results and used for diagnostic value calculation and statistical analysis .Results There are statistically differences ( P <0.05 ) between the benign and malignant groups in the high frequency ultrasound features such as halo , low internal echo , bound-ary irregularity, lymph node metastasis and micro calcification .Also there are statistically differences ( P <0.05) between the two groups in the color Doppler parameters such as semi -quantity blood flow distribution , peak systolic velocity ( PSV) and re-sistance index (RI).The diagnosis coincidence rate were 88.89% with high frequency ultrasound and 90.00% with color Doppler ultrasound respectively , and the diagnosis coincidence rate would be 98.89%with combined techniques of high frequency and color Doppler ultrasound , obviously higher than any single technique ( P <0.05 ) .Conclusion There are differences be-tween the benign and malignant thyroid nodules with high frequency ultrasound characteristics and color Doppler ultrasound fea -tures.According to the differences , we can provide reliable diagnostic basis for differential diagnosis between thyroid benign and malignant nodules .The diagnostic rate can be further promoted if combined techniques are applied and this is worth of clinical at -tention.