Sonohysterogram (SHG)

Last Updated: December 8, 2018

Definition - What does Sonohysterogram (SHG) mean?

A sonohysterogram is a procedure that produces a detailed view of the uterus by injecting dye into the uterine cavity and using an ultrasound machine to take images. The procedure is typically diagnostic, conducted to determine the cause of infertility, recurrent miscarriage or prior to an in vitro fertilization (IVF) cycle. The procedure is more informative than a typical ultrasound, however, it is brief, 15 minutes, and generally considered to be low risk.

A sonohysterogram is also referred to as a hysterosonogram.

FertilitySmarts explains Sonohysterogram (SHG)

The sonohysterogram can be performed at a doctor’s office, clinic, or hospital. Upon arrival, the woman would undress from the waist down and prepare as she would for a typical gynecological exam. The doctor may complete a pelvic exam and an ultrasound before injecting fluid into the uterus by way of the cervix and performing another ultrasound.

To inject the fluid, the doctor will insert a speculum in order to access the cervix. A catheter is inserted through the vagina and into the cervix, which delivers the liquid to the uterus. Once the liquid has entered the uterus, the physician will insert an ultrasound transducer, the narrow handheld tool used to complete the ultrasound, in the vagina.

Once completed, the sonohysterogram will provide medical professionals with a clear image of the inside of the uterus. This information can help to diagnose a variety of causes for issues such as repeated miscarriage, infertility, or abnormal uterine bleeding. The sonohysterogram is able to detect conditions such as:

  • Uterine scarring (adhesions)
  • Abnormal shape of the uterus
  • Growths within the uterus, such as polyps or fibroids

Following the procedure, some women may experience mild pain, spotting, or watery discharge.

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