Medical Imaging Revision

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Across
  1. 3. a property which resists the passage of ultrasound
  2. 4. one of the factors considered when choosing a radionuclide
  3. 8. decreasing this causes the contrast on an x-ray image to increase
  4. 9. the flow of charges
  5. 10. type of x-ray produced from transitions
  6. 11. when current repeatedly goes forward and backward
  7. 12. ability of certain materials to generate an electric charge in response to being squeezed
  8. 13. the change in a sound wave from a moving source relative to an observer
  9. 16. vibrations between 20 - 20,000 Hz which cause the ear drum to vibrate
  10. 18. the process of sending and receiving signals to locate objects
  11. 20. your physics teacher's first name
  12. 21. a cyclical wobble
Down
  1. 1. branch of radiography which uses imaging technology to examine patients
  2. 2. uses continuous x-rays to record a video
  3. 5. detected by an x-ray detector in a CT scan
  4. 6. ensures gamma rays which pass through are aligned
  5. 7. most used radioisotope in medical imaging
  6. 14. a spectrum which consists of radio, microwaves, visible light and gamma waves
  7. 15. the number of waves every second
  8. 17. radionuclide commonly used to test the function of a thyroid
  9. 19. when the input and natural frequency are the same