Once the contrast has been injected the radiologist will take a still x-ray that demonstrates the HSG findings. Ideally, the contrast will appear to spill out of the ends of the fallopian tubes. Patients with blocked tubes will either have tubes that do not fill with contrast, or tubes that fill without spill. Often dilated tubes will be demonstrated if the obstruction is at the fimbriated end of the fallopian tube. After the still x-ray has been completed the procedure is finished.
Most patients are surprised at how quick the actual procedure can be accomplished.
You may also view the instruments . The most common risk during an HSG procedure is cramping. As the contrast fills the uterus and fallopian tubes, there are muscles that are stretched. These muscles respond by reflexive contractions that cause cramping. Spasm of the tubes tends to be more uncomfortable than uterine cramps but lasts a shorter amount of time.