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Related Experiment Videos

Mirror-image artifact can affect transcranial Doppler interpretation

D Ratanakorn1, F W Kremkau, L G Myers

  • 1Department of Neurology, Wake Forest University School of Medicine, Winston-Salem, NC, USA.

Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging
|July 17, 1998
PubMed
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Spectral Doppler artifacts in transcranial Doppler ultrasonography (TCD) can lead to misinterpreting blood flow velocity in patients with subarachnoid hemorrhage, potentially causing diagnostic errors.

Area of Science:

  • Neurology
  • Medical Imaging
  • Vascular Ultrasound

Background:

  • Transcranial Doppler (TCD) ultrasonography is crucial for assessing intracranial arterial blood flow velocity.
  • It aids in detecting and monitoring vasospasm, a common complication in subarachnoid hemorrhage (SAH).

Observation:

  • A case study over one month revealed significant fluctuations in middle and anterior cerebral artery blood flow velocity in an SAH patient.
  • These fluctuations were linked to a specific spectral Doppler artifact.

Findings:

  • A mirror-image artifact in the Doppler fast Fourier transform velocity spectrum caused an erroneous overestimation of blood flow velocity.
  • This artifact can lead to misinterpretation of TCD data.

Implications:

Related Experiment Videos

  • Misinterpretation of TCD data due to artifacts may result in incorrect diagnoses of vasospasm.
  • Improper diagnosis can lead to suboptimal or incorrect patient treatment strategies.