Blooming artifact (ultrasound)

Blooming or color bleed artifact occurs when the color signal indicating blood flow extends beyond its true boundaries, spreading into adjacent regions with no actual flow.

This artifact mainly affects the portion of the image distal to the vessel and the transducers. It is somewhat similar to its MRI namesake as both phenomena denote something that seemingly appears larger than its true physical limits.

Blooming occurs because the spatial resolution of color Doppler is lower than greyscale ultrasound 1. It can be exaggerated by inappropriately high color gain. It is important to be aware of as it may obscure partial occlusions such as thrombi resulting in misdiagnosis 2. It can be avoided by lowering the color gain until the bleed of signal outside of the vessel disappears 3.

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Article information

rID: 64597
System: Vascular
Section: Physics
Synonyms or Alternate Spellings:
  • Color bleed artifacts (ultrasound)
  • Color bleed artefacts (ultrasound)
  • Colour bleed artifacts (ultrasound)
  • Colour bleed artefacts (ultrasound)
  • Color bleed artifact (ultrasound)
  • Color bleed artefact (ultrasound)
  • Colour bleed artifact (ultrasound)
  • Colour bleed artefact (ultrasound)
  • Blooming artefacts (ultrasound)
  • Blooming artifacts (ultrasound)
  • Blooming artefact (ultrasound)

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Cases and figures

  • Figure 1: Blooming/color bleed artifact
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  • Video 1: Blooming/color bleed artifact
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