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目的:研究MSCT血管成像对基底动脉变异的诊断价值,并探讨其临床意义。方法:回顾性分析MSCT血管成像诊断基底动脉变异120例,所有患者均采用GELightSpeed64层螺旋CT对其头颈部动脉进行CT血管成像扫描,将获得的原始数据传入AW4.2P后处理工作站,血管重建技术包括容积再现(VR)、最大密度投影(MIP)、多平面重建(MPR)及曲面重建(CPR),影像分析采用智能血管分析与目测法相结合。结果:基底动脉走行弯曲50例(42%),包括左侧凸30例(25%)、右侧凸例15例(占12.5%)、S型凸5例(3.5%);基底动脉起止点变异47例(39.3%),其中起点变异35例(29.3%)、终点变异12例(10%);基底动脉形态变异14例(11.7%),其中开窗型10例(8.3%)、管径粗大2例(占1.7%)、管径细小2例(1.7%);基底动脉主要分支变异9例(7.5%)。结论:MSCT血管成像是一种无创性诊断基底动脉变异的有效方法,能够解释临床上部分不明原因的基底动脉供血不足,具有重要的临床意义。
Objective: To investigate the diagnostic value of MSCT angiography in the diagnosis of basilar artery disease and its clinical significance. Methods: A retrospective analysis of MSCT angiography in 120 cases of diagnosis of basilar artery, all patients using GELightSpeed64-slice spiral CT head and neck artery CT angiography scanning, the obtained raw data into AW4.2P post-processing workstation, blood vessels Reconstruction techniques include Volume Reproduction (VR), Maximum Density Projection (MIP), Multiplanar Reconstruction (MPR) and Surface Reconstruction (CPR). Image analysis uses a combination of intelligent blood vessel analysis and visual inspection. Results: Fifty cases (42%) of basilar artery flexed, including 30 cases (25%) of left and 15 cases (12.5%) of right convex and 5 cases of S-convex (3.5% Among them, there were 47 cases (39.3%) with variation of starting point in 35 cases (29.3%) and 12 cases (10%) in terminal point, and 14 cases (11.7% There were 2 cases (1.7%) in diameter and 2 cases (1.7%) in diameter, and 9 cases (7.5%) in the main branch of basilar artery. Conclusion: MSCT angiography is a noninvasive method for the diagnosis of basilar artery anomalies. It can explain the insufficiency of basilar artery which is partly unknown in clinical practice and has important clinical significance.