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  • Created by: Emma
  • Created on: 28-03-13 19:34
  • X-Rays are short-wavelength electromagnetic waves
  • They are produced in an X-Ray tube when fast-moving electrons hit a target
  • Their wavelengths are about the same as the diameter of an atom
  • To make an X-Ray photograph (radiograph),
    • X-Rays from an X-Ray tube are directed at the patient
    • A lightproof cassette containing a photographic film or a flat-panel detector is placed on the other side of the patient
    • When the X-Ray tube is switched on, X-Rays from the tube pass through the part of the patient's body under investigation
    • X-Rays pass through soft tissue but are absorbed by bones, teeth and metal objects that are not too thin.
      • The parts of the


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