X-ray examinations
X-ray examinations are used to “look through” different parts of your body. Different amounts of radiation are able to pass through different types of tissue, and this produces the x-ray image. Bones absorb almost all the radiation because they are so dense – so they appear as white or grey outlines on the x-ray image. Soft tissues like fat or muscles let almost all radiation pass through them – they do not appear on the x-ray image.
This is why x-ray examinations are particularly useful for examining the skeleton, but not very good for examining soft tissues. X-ray examinations always involve exposure to radiation, which is why they should only be done if medically necessary. Pregnant women only have x-rays in very rare cases.
When is this approach used?
X-ray examinations are used to detect or rule out problems like fractures, signs of wear and tear, abnormal positions of bones or bone inflammations.
What does it involve?
Before having an x-ray you are asked to remove any clothing and jewelry from the part of the body that is to be x-rayed. Depending on the part of the body to be examined, you may need to lie down, sit, or stand. While the x-ray is being taken, your body is positioned between the radiation source and the x-ray film. Genitals are protected from radiation by a lead apron if possible. The medical staff will usually also wear lead aprons for protection. It only takes a few seconds to get the image.