Final answer:
The x-ray exam is called hysterosalpingography (HSG), a procedure used to examine the structure of the uterus and fallopian tubes and check for blockages. It involves the injection of a dye that is then observed using x-rays. Ultrasonography is another imaging technique, safe for pregnancy, that uses sound waves to create internal images.
Step-by-step explanation:
An x-ray exam of the fallopian tubes and uterus in which a contrast medium such as dye or air is used is called a hysterosalpingography (HSG). This medical procedure is typically done to analyze the shape and structure of the uterus and to check if the fallopian tubes are open. During an HSG, a dye is injected through the cervix into the uterus and fallopian tubes, and x-rays are taken to see if the dye moves freely through the reproductive system, thus highlighting potential blockages which might contribute to infertility. Hysterosalpingography is often one of the steps in a fertility assessment, preceding potential options such as in vitro fertilization (IVF) or surgeries like tubal ligation or the surgical removal of blockages
Other imaging studies, like ultrasonography, may be used to safely monitor pregnancy, as they are non-invasive and do not involve radiation. Ultrasonography uses high-frequency sound waves to create real-time images of the internal structures of the body, including fetal development during pregnancy.