摘要
目的探讨彩色多普勒超声对大动脉炎患者颈动脉窃血的诊断价值及其血流动力学特点。方法19例伴有颈动脉窃血的大动脉炎患者作为病例组，19例健康志愿者作为对照组，超声检测双侧颈总动脉（CCA）、颈内动脉（ICA）、颈外动脉（ECA）及椎动脉（VA）。记录各动脉的血流方向、频谱形态、峰值血流速度（PSV）及椎动脉的内径。结果颈动脉窃血时同侧ICA与ECA的血流方向相反，ICA的血液流向头侧，ECA的血液流向尾侧；ICA呈现低频低阻血流频谱，严重时呈静脉样频谱，病例组ICA的PSV低于对照组，两者差异具有统计学意义（P〈0．001）；颈动脉窃血侧ICA和ECA的PSV具有良好的相关性（r=0．77）；椎动脉血流方向正常，内径和血流速度均较对照组增加（P〈0．001）。结论彩色多普勒超声可较准确、直观地显示颈动脉窃血的形态学及血流动力学改变，可为临床提供有价值的诊断信息。
Objective To demonstrate the value of color Doppler ultrasound in evaluating carotid artery hemodynamics of carotid steal in patients with Takayasu arteritis （TA）. Methods Nineteen TA patients with carotid steal were enrolled as case groups, while 19 healthy volunteers were considered as healthy controls. All the case groups and healthy controls were taken the examination of the common, external,and internal carotid arteries and the vertebral artery under quiescent condition. Bilateral carotid ultrasonography studies were performed, which included gray-scale, pulsed Doppler, and color Doppler ultrasound examinations using 5 - 8 MHz linear transducers. Results In case groups, blood flow in the internal carotid artery （ICA） was noted cephalad and demonstrated a low frequency,damped, even vein-liked waveform. The peak systolic velocity （PSV） of the ICA in the patients was obviously lower than that in the healthy controls （ P （（）. 001 ）. The blood flow in the external carotid artery（ECA） was retrograde. There was a good correlation in the PSV between the external and internal carotid artery, correlation coefficient（r） was 0.77. The vertebral artery （VA） displayed a normally directed flow, significantly larger diameter and higher flow velocity （ P ~0. 001 ）. Conclusions Color Doppler ultrasonography can sensitively identify carotid steal and permit quantification of carotid artery flow velocities and vertebral artery diameters, which may contribute to guide clinical diagnosis.
出处
《中华超声影像学杂志》
CSCD
北大核心
2013年第2期119-122,共4页
Chinese Journal of Ultrasonography
