Abstract: Nowadays, the prevalence of infertility is increasing. For infertile women, it is necessary to assess tubal patency. The gold standard of tubal patency assessment is laparoscopy with chromopertubation (LC). Hysterosalpingography (HSG), the most widely used technique, may cause iodine allergy and radiation exposure. Therefore, ultrasonography is expected as an alternative method of tubal patency assessment. At present, ultrasonography of fallopian tube consists of saline-infusion sonography (SIS), hysterosalpingo-contrast sonography (HyCoSy) and hysterosalpingo-foam sonography (HyFoSy), and HyCoSy is the most commonly used. Compared to traditional LC and HSG, HyCoSy shows accuracy and convenience while avoiding hospitalization, general anesthesia, radiation and iodine allgery, which makes it a promising technique in the future.

Key words: Infertility, female, Fallopian tube diseases, Laparoscopy, Fallopian tubes