严重闭塞性颈动脉病时脑血管自身调节问题的解决主要取决于侧支循环的功能。先前侧支循环有关血流动力学紊乱的报道表明往往是通过创伤性的脑血管造影来评价颈动脉血液供应的状况。本研究是用无创伤性经颅多普勒超声(TCD)测定侧支循环和血管运动反应性。 病人48例,男性42例,女性6例,年龄25～81岁,平均59±9岁。经血管造影证实:36例为颈内动脉闭塞,12例为一侧颈内动脉90％以上狭窄。TCD通过测定血流方向,压迫试验和血流速度评估前后交通动脉的供血、眼动脉及软脑膜吻合术。同侧脑血管运动反 Serious occlusive carotid artery disease, cerebral vascular self-regulation solution mainly depends on the collateral circulation function. Previous reports of hemodynamic disorders of the collateral circulation have shown that traumatic cerebral angiography is often used to assess the status of carotid blood supply. This study examined collateral circulation and vasomotor responsiveness using noninvasive transcranial Doppler ultrasound (TCD). 48 patients, 42 males and 6 females, aged 25 to 81 years, mean 59 ± 9 years. Angiography confirmed: 36 cases of internal carotid artery occlusion, 12 cases of lateral carotid artery more than 90% stenosis. TCD by assessing the direction of blood flow, compression test and blood flow velocity assessment before and after the traffic artery blood supply, ophthalmic artery and pachymembi anastomosis. Ipsilateral cerebral vascular movement