Mirror‐Image Artifact Can Affect Transcranial Doppler Interpretation

Transcranial Doppler ultrasonography (TCD) allows evaluation of blood‐flow velocity in intracranial arteries detection and monitoring of vasospasm in patients with subarachnoid hemorrhage. Spectral Doppler artifacts can affect TCD data. A 1‐month series of TCD findings showed marked fluctuation in b...

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Bibliographic Details
Published in:Journal of neuroimaging 1998-07, Vol.8 (3), p.175-177
Main Authors: Ratanakorn, Disya, Kremkau, Frederick W., Myers, Lawrence G., Meads, Dana B., Tegeler, Charles H.
Format: Article
Language:English
Subjects:
Aneurysm, Ruptured - diagnostic imaging
Blood Flow Velocity - physiology
Female
Humans
Intracranial Aneurysm - diagnostic imaging
Ischemic Attack, Transient - diagnostic imaging
Middle Aged
Sensitivity and Specificity
Subarachnoid Hemorrhage - diagnostic imaging
Ultrasonography, Doppler, Transcranial
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Summary:Transcranial Doppler ultrasonography (TCD) allows evaluation of blood‐flow velocity in intracranial arteries detection and monitoring of vasospasm in patients with subarachnoid hemorrhage. Spectral Doppler artifacts can affect TCD data. A 1‐month series of TCD findings showed marked fluctuation in blood‐flow velocity values in both the middle and anterior cerebral arteries of a patient with subarachnoid hemorrhage. A mirror‐image artifact of the Doppler fast Fourier transform velocity spectrum resulted in erroneous interpretation of higher flow velocity in certain vessels. This artifact may cause misinterpretation of TCD flow‐velocity data and lead to improper diagnosis of the condition and treatment of patients.
ISSN:1051-2284
1552-6569
DOI:10.1111/jon199883175