Mirror-Image Artifact Can Affect Transcranial Doppler Interpretation
| Autor: | Charles H. Tegeler, Dana B. Meads, Disya Ratanakorn, Frederick W. Kremkau, Lawrence G. Myers |
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| Rok vydání: | 1998 |
| Předmět: |
Subarachnoid hemorrhage
Ultrasonography Doppler Transcranial Cerebral arteries Aneurysm Ruptured Sensitivity and Specificity symbols.namesake Aneurysm medicine Humans Radiology Nuclear Medicine and imaging Artifact (error) business.industry Intracranial Aneurysm Vasospasm Middle Aged Subarachnoid Hemorrhage medicine.disease Transcranial Doppler Flow velocity Ischemic Attack Transient cardiovascular system symbols Female Neurology (clinical) Artifacts business Nuclear medicine Doppler effect Blood Flow Velocity circulatory and respiratory physiology |
| Zdroj: | Journal of Neuroimaging. 8:175-177 |
| ISSN: | 1051-2284 |
| DOI: | 10.1111/jon199883175 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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