Ultrasound images are visual representations created using sound waves to capture the internal structures of the body. This non-invasive imaging technique is commonly used in medical settings to monitor the development of fetuses during pregnancy, assess organs, and detect abnormalities. The process involves placing a small device called a transducer on the skin, which emits high-frequency sound waves. These waves bounce off tissues and return to the transducer, creating real-time images on a monitor. Ultrasound is safe, painless, and does not use radiation, making it a preferred choice for many diagnostic purposes.