Colour comet-tail artefact

The colour comet-tail artefact is an ultrasonographic sign seen in a number of situations, when colour Doppler scanning is performed.

Typically the artefact, which resembles the grey-scale comet-tail artefact, is seen in situation when a small highly refractive (usually calcific) object is interrogated with colour Doppler. Twinkle artefact occurs and immediately deep to the object a tail linear aliased band of colour extends away from the probe.

The following are situations in which this sign may be present and helpful:

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rID: 9929
Section: Physics
Tag: ultrasound
Synonyms or Alternate Spellings:
  • Colour comet tail artifact
  • Colour comet-tail artefact
  • Color comet tail artifact
  • Color comet-tail artefact
  • Color comet tail artefact
  • Colour comet tail artefact
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    Figure 1: photograph of comet-tail
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    Comet tail artefa...
    Case 1: vesicouretric junction calculus
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    Right side
    Case 2
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    Case 3: thyroid colloid nodule
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