1.Visit the clinic 1.Don’t have intercourse after menstruation, see the clinic on the 2nd-3rd day after menstruation, have normal results of routine leucorrhea test (the results can be seen immediately), have a body temperature <37.5 degrees Celsius, have no cold or respiratory diseases, and have no recent symptoms such as lower abdominal pain, then you can open an application form to make an appointment for uterine tubal photography. Miao Jie, Department of Radiology, Beijing Maternity Hospital 2. HSG is usually booked on the 3rd-7th day after menstrual cleansing (before ovulation). 3, HSG procedure usually takes about 5 minutes, and the procedure is usually not very painful and is tolerable, therefore, no anesthetic injection is needed. 4. Precautions after HSG: (1) Prohibit intercourse and tub bathing for 2 weeks after surgery. (2) Take oral antibiotics for 3-5 days. (3) Pick up the report from the registration room of the outpatient radiology department after 1 working day. (4) You can call the consultation number before the visit. East Campus (Unity Lake, Chaoyang District, consultation number 010-52276424) and West Campus (Riding River Building, Dongcheng District, consultation number 010-52277602), both in the radiology department on the 2nd floor of the outpatient clinic. (5) The fastest - after hysterosalpingography, if the fallopian tubes show patency, you can try for pregnancy in the next menstrual cycle. (6) If you find that you are successful in trying to conceive (trying to conceive during ovulation improves the success rate of conception), go to the hospital as early as possible to check to rule out ectopic pregnancy. In case of ectopic pregnancy, the earlier it is found, the better the treatment effect will be and minimize the impact of ectopic pregnancy on the fallopian tubes. (7) Bilateral tubal patency is only one part of successful pregnancy. If there are irregular menstruation, bad ovulation, endocrine problems, poor sperm quality, etc. or other problems, you need to see the corresponding gynecological clinic or endocrine clinic, etc. II. Procedure of HSG operation As iodine water is easily absorbed and has little side effects. It is especially important to take a delayed film as a proof to assess the patency of the fallopian tubes. It is particularly important to take a delayed film as a proof of tubal patency. If iodine oil is used as the contrast agent, the delayed film should be taken again after 24 hours because of the slow dispersion of iodine oil. Although there are many hospitals that can do tubal imaging, there are not many that can really do it well. Many patients send in their films and half of them fail, either because they did not delay the film, or the interval between delayed films is too short, or the medication given is not enough, or the tube is not inserted in place, or the corner of the uterus is blocked when the tube is inserted, resulting in pseudo-isolation of the fallopian tubes, or the timing of the film may not be right, resulting in poor fallopian tube visualization. Therefore, it is easy to do the imaging but difficult to do it well. If the hospital where the patient is seen and the doctor who does the imaging happen to be not very professional, it will be easy to misdiagnose the problem and since the diagnosis is wrong, the direction of treatment will definitely be wrong. The actual fact is that you will be able to find a professional doctor in a regular hospital who is very specialized in tubal examination, otherwise you will spend money and suffer and also delay seeing a doctor. The key to tubal diagnosis and treatment is tubal imaging, another key is the reading of the film. Many patients have the experience that after the film is done, the radiologist says that it is not smooth, and then the attending doctor says that it is not clear and suggests that you do laparoscopy, and then a different doctor says that the blockage is so bad that you can only do IVF, and some doctors say that there is nothing wrong with the fallopian tube after looking at it. The more the patient looks at the film, the more confused they become and they don't know who is right. Why? Because different doctors have seen different numbers of films and have different experiences, so the accuracy rate is higher if you read more, and the misdiagnosis rate is higher if you read less. For example, we do nearly 10,000 imaging sessions per year, so we know exactly where a patient's films fail. Why? Because they are the mistakes we have made before, but some doctors do less ah, so she does not know that she is wrong still think it is the disease which is easy to misdiagnosis. And nowadays, hospitals usually do imaging in the radiology department, while your consultation is usually in the obstetrics and gynecology department, so the doctor who treats you does not do imaging, and the doctor who does imaging for you does not treat the disease. The two are disconnected and it is not easy to give you an accurate diagnosis. Our doctors here are each from the most basic imaging to do, so they look at any look at the film can be in place experienced, even if he did not do he will know what is going on, this is the importance of reading the film.