How is a tubal obstruction diagnosed?

Antonio Forgiarini, gynaecologist at Next Fertility Valencia, tells us about the process to diagnose a possible obstruction of the fallopian tubes:

We can use some diagnostic tests like hysterosalpingography or hysterosalpingosonography. They consist in putting some contrast medium in the uterus with a certain pressure. So, we can push this medium the liquid through the uterus and the Fallopian tubes to the pelvis. In this moment, we can perform an ultrasound scan or a radiography and see that the the contrast medium comes out from the tubes and goes to the pelvis, so in this case we can say that the Fallopian tubes are open. If we cannot see that the medium passes to the pelvis, it remains in the uterus or in the first part of the tubes, we can say that they are closed.