RADIATION BIOLOGY

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Across
  1. 1. Alignment of central ray of x-ray beam in horizontal and vertical planes.
  2. 3. side-to-side motion of the PID
  3. 6. up and down motion of the PID
  4. 7. The amount of radiation needed to produce a film of standard density
Down
  1. 2. time between exposure to ionizing radiation and the appearance of symptoms
  2. 4. The invisible image on the x-ray film after exposure but before processing.
  3. 5. A concept of radiation protection that states that all exposures should be kept "as low as reasonably achievable"