A chest X-ray is a medical imaging test that uses a small amount of radiation to create pictures of the structures inside the chest, including the heart, lungs, and bones. It helps doctors diagnose various conditions, such as infections, fractures, and tumors. The procedure is quick and typically takes only a few minutes. During the test, the patient stands in front of a machine and takes a deep breath while the X-ray is taken. The images produced can reveal abnormalities and assist in monitoring the progress of certain diseases. Chest X-rays are commonly used due to their effectiveness and ease of use.