Ultrasound is widely used for imaging various parts of the body, including the abdomen, pelvis, heart, blood vessels, and fetus during pregnancy. It provides real-time imaging, allowing for the visualization of moving structures such as blood flow, heart valves, and fetal movements. Doppler ultrasound is a specialized technique that assesses blood flow and can detect abnormalities such as blood clots or blockages. Ultrasound can be used for diagnostic purposes, such as identifying gallstones, kidney stones, tumors, or cysts. It is commonly used for guidance during procedures like biopsies, needle aspirations, and fluid drainage. The procedure is generally painless, though some discomfort may be experienced due to pressure or probe movement. Ultrasound scans are performed using a handheld transducer that is moved over the skin, with a gel applied to improve contact and image quality.