An x-ray is a painless test in which an image is created of part of the body by using low doses of electromagnetic radiation that are reflected on film paper or fluorescent screens. X-rays can be used  to help diagnose a wide range of conditions, from a broken arm to abnormal growths. Depending upon a physician’s evaluation, review and interpretation of an x-ray image, further tests may be ordered.

X-ray images are typically taken with no preparation but in some cases, the physician might use a special dye (contrast medium). This dye is helpful in highlighting and identifying certain structures and conditions within the body. If a contrast medium is going to be used, changes may be made in the patient’s diet or medication schedule prior to the test.

In most cases, x-rays are safe, effective diagnostic tools that expose patients to very low levels of radiation. However, women who are or may be pregnant are advised to avoid x-rays or wear a protective lead apron over the abdomen during the test. X-ray radiation in high doses has the potential to harm a fetus if the rays are directed at certain parts of the body, such as the abdomen or lower back. According to the U.S. Food and Drug Administration (FDA), x-ray tests pose very little risk to the expectant mother or unborn child.