Ultrasound is basically medical sonography that uses high-frequency sound waves to develop images. Ultrasounds are mainly used to see the fetus’s development during pregnancy and also to diagnose kidney stones. In ultrasound, the sound wave travels through soft tissue and fluids, hits the organ, and then bounces back to produce an image. Some people get confused about X-rays and ultrasound, as both can show the body’s internal parts. But the main difference between X ray and ultrasound is that ultrasound shows internal organs while X-ray includes bone, teeth, jaws, lungs, throat, and other structures.