Hysterosalpingography (HSG), also known as uterosalpingography, is a radiologic procedure to investigate the shape of the uterine cavity and the shape and patency of the fallopian tubes. This means it is a special x-ray using dye to look at the womb (uterus) and Fallopian tubes. It injects a radio-opaque material into the cervical canal and usually fluoroscopy with image intensification. A normal result shows the filling of the uterine cavity and the bilateral filling of the fallopian tube with the injection material.
It is useful to diagnose uterine malformations, Asherman’s syndrome, tubal occlusion, and pelvic inflammatory disease and used extensively in the work-up of infertile women. It has been claimed that the chance of pregnancy increases after HSG has been performed