Ultrasound devices are medical tools that use high-frequency sound waves to create images of the inside of the body. These images help doctors examine organs, tissues, and blood flow without needing invasive procedures. Commonly used in prenatal care, ultrasound can visualize a developing fetus, ensuring its health and growth. The technology works by sending sound waves into the body, which bounce back to the device when they hit different tissues. The device then converts these echoes into real-time images. Ultrasound is safe, painless, and does not involve radiation, making it a preferred choice for many diagnostic purposes, including examining the heart, liver, and kidneys.