Ultrasound machines are medical devices that use high-frequency sound waves to create images of the inside of the body. These images, known as ultrasound scans, help doctors visualize organs, tissues, and blood flow without needing invasive procedures. Commonly used in prenatal care, they allow healthcare providers to monitor the development of a fetus in the womb. The technology behind ultrasound machines involves a transducer, which emits sound waves and captures the echoes that bounce back from internal structures. This information is then processed to produce real-time images on a monitor. Ultrasound is safe, painless, and does not involve radiation, making it a preferred imaging method for many medical situations.