Sonohysterogram (Saline Infusion Sonogram)

Reading Time: < 1 minutes

Key Takeaways
  • Uses ultrasound and sterile saline to evaluate the uterus.
  • Detects fibroids, polyps, or scarring that can affect implantation.
  • Simple, in-office procedure with minimal discomfort.

A healthy uterus is essential for a healthy pregnancy—and one of the best ways to evaluate the uterine cavity is with a sonohysterogram, also known as a saline infusion sonogram (SIS).

During this gentle in-office procedure, a small amount of sterile saline is introduced into your uterus through a thin catheter. As the saline expands the cavity, your doctor performs an ultrasound to visualize the uterine lining and shape.

This test allows your fertility specialist to detect abnormalities such as:
  • Uterine polyps or fibroids
  • Scar tissue (adhesions)
  • Structural concerns like a septum or irregular cavity

The procedure usually takes about 10–15 minutes and feels similar to a Pap smear. Some patients experience mild cramping that passes quickly.

At RPSD, our team performs sonohysterograms in-office for your comfort and convenience, helping to ensure that your uterus provides the best possible environment for embryo implantation and pregnancy success.