The examination procedure is as follows: 1. Intrauterine placement is performed first, followed by examination Patients tolerate 4D-HyCoSy better. According to the study statistics, 10.6 %. 2, of the patients had no significant pain 69.3% of the patients had only mild pain, the degree of which did not exceed the pain of menstruation 15.1%. 3, of the patients had moderate pain, the degree of which exceeded the menstrual pain 5.0% of the patients had severe pain or vasovagal disorientation. 4, menstrual reaction, requiring observation All patients did not have serious complications. In addition, the contrast used by 4D-HyCoSy. 5, agent acoustic Novelty can be used for coronary angiography and hepatic angiography, there is no risk of allergy and pulmonary embolism, and does not affect the follow-up. 6.The ovarian function of the menstrual cycle, the next month can try to conceive.