镜像伪像会影响经颅多普勒超声的解读。

Mirror-image artifact can affect transcranial Doppler interpretation.

作者信息

Ratanakorn D, Kremkau F W, Myers L G, Meads D B, Tegeler C H

机构信息

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

出版信息

J Neuroimaging. 1998 Jul;8(3):175-7. doi: 10.1111/jon199883175.

DOI:10.1111/jon199883175

PMID:9664857

Abstract

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.

摘要

经颅多普勒超声检查（TCD）可用于评估颅内动脉的血流速度，检测和监测蛛网膜下腔出血患者的血管痉挛情况。频谱多普勒伪像会影响TCD数据。一项为期1个月的TCD检查结果显示，一名蛛网膜下腔出血患者的大脑中动脉和大脑前动脉的血流速度值均出现明显波动。多普勒快速傅里叶变换速度频谱的镜像伪像导致对某些血管中较高流速的错误解读。这种伪像可能会导致对TCD流速数据的错误解读，并导致对病情的诊断不当和对患者的治疗不当。