The cost of thyroid ultrasound examination varies depending on the level of the hospital, the region where the hospital is located, and the instruments used by the hospital. In general, a 3D thyroid ultrasound examination at a tertiary care hospital costs$230, while an ordinary thyroid ultrasound examination costs$100. Ultrasound of the thyroid gland can observe the size, shape, internal echo and blood supply of the thyroid gland. Ultrasound of the thyroid gland can diagnose thyroid cysts, thyroiditis, nodular goiter, thyroid adenoma, papillary thyroid cancer, Hashimoto’s thyroiditis, hyperthyroidism and other diseases. Thyroid ultrasound can also observe the peri-thyroid lymph nodes, and observe the size, shape, and internal echo of the lymph nodes, and whether there are cystic changes and punctate microcalcifications inside, which can determine whether they are metastatic lymph nodes of papillary thyroid cancer.