What department you need to register for an ultrasound will depend on the part of the body being examined and the purpose of the examination. Different parts of the examination and the purpose of the examination, need to hang the department is also different. The common departments are Obstetrics and Gynecology, Gastroenterology, Hepatobiliary Surgery, Urology, General Surgery, etc. 1, Obstetrics and Gynecology: If a woman is pregnant and wants to test the growth of the fetus, her actual gestational week or whether she has an ectopic pregnancy, she needs to hang up the Obstetrics and Gynecology department. 2, Hepatobiliary Surgery: If you suspect that there is a disease in the liver and gallbladder organs, such as gallbladder stones, gallbladder polyps, hepatic cysts, you need to hang up the Hepatobiliary Surgery Department. Patients with such diseases often have abdominal pain, nausea and other uncomfortable symptoms; 3. Urology: If you check kidney and urinary related diseases, such as suspected kidney tumor, urinary stones, ureteral stones, pyelonephrosis, etc., you need to hang up the urology department. If suffering from such diseases, patients may have pain, hematuria and other uncomfortable symptoms; 4. General Surgery: If you suspect that you are suffering from other diseases, such as wanting to check the thyroid gland and breast to clarify whether there are thyroid nodules and breast nodules and other diseases, you need to hang up the Department of Nail and Breast Surgery. In addition, a few hospitals will have a separate ultrasound clinic, but most hospitals prescribe ultrasound or color Doppler ultrasound examination program, which is prescribed by doctors of various clinical departments according to the disease, and then completed by ultrasound doctors or ultrasound technicians.