An ultrasound is a non-invasive imaging study that uses high-frequency sound waves instead of X-rays to produce images of the soft tissues in the body. Ultrasounds can capture real-time images that show motion. For general imaging, ultrasounds are used to identify unexplainable areas of pain, swelling, or infection. For women’s imaging, ultrasounds are used to monitor the overall health of the reproductive organs and a fetus during pregnancies.