In this procedure we use an X-ray contrast dye to expand the uterine cavity. We then take an X-ray while the uterus and fallopian tubes are injected with dye. The goal of the HSG is to assess whether the fallopian tubes are open. The HSG is also good for evaluating uterus abnormalities like those shown below, but it is not as good as the sonohysterogram for picking up subtle lesions.
We usually do this test between cycle days 6-12, or while on birth control pills. You will be given a prescription for an antibiotic before the procedure to reduce the risk of infection.