Definition of Chest x-ray:

A chest x-ray is an x-ray of the chest, lungs, heart, large arteries, ribs, and diaphragm.

How the test is performed:

The test is performed in a hospital radiology department or in the health care provider's office by an x-ray technician. Two views are usually taken: one in which the x-rays pass through the chest from the back (posterior-anterior view), and one in which the x-rays pass through the chest from one side to the other (lateral view). You stand in front of the machine and must hold your breath when the x-ray is taken.

How to prepare for the test:

Inform the health care provider if you are pregnant. Chest x-rays are generally avoided during the first six months of pregnancy. You must wear a hospital gown and remove all jewelry.

How the test will feel:

There is no discomfort. The film plate may feel cold.

Why the test is performed:

Your doctor may order a chest x-ray if you have any of the following symptoms:

• A persistent cough
• Chest injury
• Chest pain
• Coughing up blood
• Difficulty breathing

It may also be done if you have signs of tuberculosis, lung cancer, or other chest or lung disease.

A serial chest x-ray (repeated) may be used to evaluate or monitor changes found on a previous chest x-ray.