Sonography, commonly known as ultrasound, is a medical imaging technique that uses high-frequency sound waves to create images of organs and structures inside the body. It is widely used for various diagnostic purposes, including monitoring fetal development during pregnancy and examining the heart, liver, and kidneys. The procedure is non-invasive and does not involve radiation, making it a safe option for patients. Sonographers, trained professionals, operate the equipment and interpret the images, providing valuable information to physicians for accurate diagnosis and treatment planning.