Mirror image artifact

Mirror image artifact in sonography is seen when there is a highly reflective surface (e.g. diaphragm) in the path of the primary beam.

The primary beam reflects from such a surface (e.g. diaphragm) but instead of directly being received by the transducer, it encounters another structure (e.g. a nodular lesion) in its path and is reflected back to the highly reflective surface (e.g. diaphragm). It then again reflects back towards the transducer.

The ultrasound machine makes a false assumption that the returning echo has been reflected once and hence the delayed echos are judged as if being returned from a deeper structure, thus giving a mirror artifact on the other side of the reflective surface.

See also

Ultrasound - physics
Ultrasound - general index
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Article information

rID: 26561
Section: Physics
Synonyms or Alternate Spellings:
  • Duplication artifact
  • Mirror image artefact
  • Mirror image artefacts
  • Mirror image artifacts
  • Mirror image artefact - ultrasound
  • Mirror image artifact - ultrasound

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