椎-基底动脉轻度缺血性眩晕的椎动脉2DE—PWD多普勒超声检查

Extracranial Vertebral Arteries by 2-Dimensional Echocardiography and Pulsed-wave Doppler Ultrasonography in Vertigo Caused by Mild Vertebra-basilar Ischemia

作者对90例确诊为椎-基底动脉轻微缺血性眩晕的患者作了颅外段椎动脉的两维成象及脉冲Dopoler超声检查,48例(53.3％)有异常,其中83.3％为管径细小伴或不伴有血流量的下降,多与颈椎增生有关,4例则仅有血流量下降,管壁不清或血管不显影者各2例。因本组未见1例明确动脉硬化者,且血管细小多系血管痉挛所致,以及血液动力学改变与发病有关,因此超声所见提示了本病预后较好的原因。本法与多种电生理检查结果之间无相关性,和数字减影血管造影结果一致,认为是对本病颅外段椎动脉的一项有前途的辅诊手段。

Ninety cases of vertigo due to mild vertebro- basilar ischemia were examined by 2- dimensional echocardiography and pulsewave doppler ultrasonography. Forty-eight cases (53.3%) were abnormal, mainly (83.3%), as narrowing of one arterial lumen with or without simultaneous decrease of blood- flow. This was related to and resulted from cervical spondylosis. A few cases showed blurred mtima, absence of images, and decrease of blood flow without changes of the lumen. The latter indicates that hemodynamic changes alone may be a reason of the disease. No definite arteriosclerotic plaques were found. All these facts might explain the benignity of the prognosis. A comparison between the findings and the results of several ncuro-clectrophysiologic test showed no correlation.A check with distal substracted angiography showed this method reliable.The present technique may therefore be considered as a valuable diagnostic procedure for the extracramal vertebral arteries in vertebra -basilar ischemia