Ultrasound is a medical imaging technique that uses high-frequency sound waves to create images of organs and structures inside the body. It is commonly used for monitoring pregnancies, assessing heart conditions, and guiding certain medical procedures. The sound waves are emitted by a device called a transducer, which captures the echoes that bounce back from tissues, allowing healthcare professionals to visualize internal structures without invasive procedures. One of the most well-known applications of ultrasound is in obstetrics, where it helps monitor the development of a fetus during pregnancy. This non-invasive method provides valuable information about the baby's health and can help detect potential issues early on, ensuring better outcomes for both the mother and child.