颈内动脉闭塞时经眼动脉侧支循环的彩色多普勒超声特征  

Color Doppler flow imaging feature of compensatory collateral circles via ophthalmic artery in patients with internal carotid artery occlusion

作　　者：熊建群[1] 余琛[1] 李应华[1] 徐恩[2] 

机构地区：[1]广州医学院第二附属医院超声科,510260 [2]广州医学院第二附属医院神经内科,510260

出　　处：《中华超声影像学杂志》2013年第3期218-221,共4页Chinese Journal of Ultrasonography

摘　　要：目的探讨单侧颈内动脉闭塞时经颈外-眼-颈内动脉侧支循环的彩色多普勒超声特征。方法应用彩色多普勒超声前瞻性检查42例单侧颈内动脉闭塞患者的眼动脉、颈外动脉，并与30例颈内动脉正常的受试者比较，分析侧支循环的超声特征。结果42条颈内动脉中，40条（95．2％）慢性闭塞由患侧颈外-眼-颈内动脉侧支循环代偿，与健侧和正常组比较，表现为眼动脉逆向血流，峰值后移，峰值血流速度增加，加速时间延长，阻力指数和搏动指数降低（P〈0．01）。2条急性栓塞（4．8％）由健侧颈内-患侧颈内动脉侧支循环代偿，表现为眼动脉正向血流，血流速度降低，阻力指数和搏动指数降低。结论颈内动脉慢性闭塞时患侧颈外-眼-颈内动脉侧支循环参与代偿，急性栓塞仅由健侧颈内-患侧颈内动脉侧支循环代偿。Objective To investigate color Doppler flow imaging features of the ophthalmic artery, external carotid artery, which is known the secondary compensatory collateral circle, in patients with unilateral internal carotid artery occlusion. Methods A total of 42 patients with unilateral internal carotid artery occlusion were enrolled, and ipsilateral and eontralateral ophthalmic artery, external carotid artery were examined by color Doppler flow imaging, prospectively, peak systolic velocity, pulsatility index and resistance index were analyzed and compared with findings of control group. Results In the 42 cases with internal carotid artery occlusion, the compensatory collateral circle was observed by the external carotid artery and ophthalmic branches, through their communicating arteries in 40 （95.2~~） cases of chronic occlusion. Compared with the contralateral side, the ophthalmic arteries were characterized by retrograde blood flow,peak backward shifting, increase of diameter [（ 1.91 ± 0.53） mm vs （ 1.69 ± 0.34） mm, P = 0. 009] and peak systolic velocity [（43.41± ＋ 27.28） cm/s vs （29.91 ± 14.16） cm/s, P = 0.003], reduced pulsatility index （1. T8 ±0.49 vs 1.69 ± 0.73, P = 0.000） and resistance index （0.65 ±.26 vs 0.75 ± 0.12, P =0.000）,and prolonged acceleration time [（147.71 ± 56, 16） ms vs （51.80±7.81）ms, P = 0. 000]. Ophthalmic arteries had antegrade blood flow with a decrease of peak systolic velocity and resistance in another two cases of acute thrombosis of ICA. Conclusions External-ophthalmic-internal carotid artery passway is another compensatory collateral circle for the chronic occlusion, but only by ipsilateral and contralateral internal carotid artery circle, for acute thrombosis.

关 键 词：超声检查 多普勒 彩色 颈内动脉 眼动脉 侧支循环 

分 类 号：R445.1[医药卫生—影像医学与核医学]