Mirror Image Artifacts in Medical Imaging Quiz
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Questions and Answers

What is mirror image in ultrasound imaging?

  • The elimination of echoes due to strong reflectors
  • The duplication of echoes on the other side of a very strong reflector (correct)
  • The distortion of echoes caused by air-filled lungs
  • The duplication of echoes within the same tissue

    • Why might we expect to see nothing superior to the diaphragm when imaging the right upper abdomen?

  • The liver prevents sound from reaching the diaphragm
  • The diaphragm does not allow sound to penetrate
  • Normal air-filled lungs act as perfect reflectors of sound (correct)
  • The spleen absorbs sound waves in this region

    • Why is the presence of mirror image artifact surprising when imaging the right upper abdomen?

  • Air-filled lungs should prevent sound from reaching the diaphragm (correct)
  • The liver typically causes mirror image artifacts
  • Sound waves cannot penetrate the diaphragm
  • The diaphragm is not a strong reflector of sound

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