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Johns Hopkins Medical Imaging

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An X-ray machine uses a small dose of radiation to produce images of structures inside the body. The X-rays pass through the area of the body being examined and are translated into images captured on the other side of the body.

Learn more about X-ray exams in the Johns Hopkins Health Library.

How do I prepare for an X-ray?

Notify the technologist if you are pregnant or think you may be pregnant. No other specific exam preparation is typically required.

What happens during an X-ray?

  1. You will be asked to remove any clothing or jewelry that may interfere with the exam. If you are asked to remove clothing, you will be given a gown to wear.
  2. The area of your body being examined will determine if you sit, stand or lie down on a table.
  3. Areas of the body not being examined may be covered with a lead apron to avoid exposure to the X-rays.

Learn more about what happens during an X-ray.

What happens after an X-ray?

There is typically no special type of care following an X-ray. However, your health care provider may give you additional instructions depending on your specific health condition.