Standard vaginal ultrasound does not allow an accurate assessment of the uterine cavity or the patency of the fallopian tubes. Fallopian tubes are anatomical structures that connect the uterine cavity with the ovaries. The Fallopian tubes move sperm to the vicinity of the ovaries, where the fertilization takes place after ovulation, and then the fertilized ova is transported by the fallopian tubes to the uterine cavity, where the pregnancy nests.
The least invasive of the additional techniques is Sono-HSG. The examination allows to assess the size and shape of the uterine cavity and patency of the fallopian tubes. It allows for the recognition of adhesions, polyps and submucosal muscles, as well as some uterine developmental defects.
During the examination a special contrasting agent is administered to the uterus using a thin catheter, the flow of fluid enables an accurate assessment of all structures using ultrasound.
The test is performed without anaesthesia (may be slightly painful), in the first half of the cycle (at the end of menstruation).