IUI vs IVF
In order to determine if you’re a candidate for IUI, the female needs to undergo an assessment of her tubal functioning because the tubes, the Fallopian tubes, are the transportation in the pelvis of the eggs and sperm into the uterus, and if that is not functional then an IUI will not be successful regardless of the amount of sperm count, motility or shape. Regardless of that, if all of that is normal, you still need the transportation to be functional, which is the Fallopian tubes.
In order to assess the Fallopian tubes, a hysterosalpingogram is performed. During this procedure, dye is placed into the uterus and then it goes into the Fallopian tubes and a radiologist or physician can determine whether or not the tubes are patent, or open.