前交通动脉复合体临床解剖学的3D-DSA研究

目的探讨前交通动脉复合体的3D-DSA的特点,为前交通动脉瘤治疗提供参考。方法回顾性分析30例全脑3D-DSA检查阴性患者的影像学资料,测量大脑前动脉A1和A2段、回返动脉直径,以及大脑前动脉A1段与颈内动脉、大脑前动脉A1段与A2段夹角。结果左、右侧大脑前动脉A1段直径分别为(1.91±0.36)mm和(1.81±0.36)mm,长度分别为(13.0±1.60)mm和(14.0±2.28)mm;左、右侧大脑前动脉A2段直径分别为(1.88±0.38)mm和(1.69±0.36)mm;左侧和右侧回返动脉直径分别为(0.50±0.15)mm和(0.42±0.13)mm;右侧大脑前动脉A1段与A2段夹角为(94.13±23.59)度,左侧大脑前动脉A1段与A2段夹角为(97.74±25.19)度,右侧大脑前动脉A1段与右侧颈内动脉夹角为(89.14±16.61)度,左侧大脑前动脉A1与左侧颈内动脉夹角为(82.30±21.06)度。结论前交通动脉复合体存在较多的变异,充分了解其解剖学3D-DSA的特点对处理前交通动脉瘤具有重要意义。

Study of the clinical anatomy of anterior communicating artery complex by 3D-DSA

Objective To provide a reference in the anatomy for surgical clipping and endovascular embolization of anterior communicating artery(ACoA) aneurysm.Methods The imaging data of 30 patients in whom the outcomes of 3D-DSA of all the brains were negative were analyzed retrospectively.The diameters of the anterior cerebral artery(ACA) A1 and A2 segments,Heubner artery and angels between the A1 segment and the internal carotid artery(ICA) and between A1 and A2 segments were determined.Results The diameter and length of the right ACA A1 segment(1.91±0.36)mm and(13.0±1.60)mm respectively.The diameters and length of the left ACA A1segment were(1.81±0.36)mm and(14.0±2.28)mm respectively.The diameters of the right and left ACA A2segment were(1.88± 0.38)mm and(1.69±0.36)mm respectively.The diameters of the right and left Heubner arteries were(0.50±0.15)mm and(0.42±0.13)mm respectively.The angles between the right ACA A1 and A2 segments and between the left ACA A1 and A2 segments were(94.13±23.59)° and(97.74 ±25.19)° respectively.The angles between the right ACA A1segment and ICA and between the left ACA A1segment and ICA were(89.14±16.61)° and(82.30±21.06)° respectively.Conclusion There are many variations of the imaging of clinical anatomy in the ACoA complex.The present results provide the imaging of the clinical anatomy for dealing with lesions of the ACoA complex.