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大脑中动脉中央支的影像解剖学研究

发布时间:2018-10-25 06:14
【摘要】:目的: 研究大脑中动脉中央支的起始的走形,,分段以及其外径;统计测量研究其发出穿通支的特点及相关解剖学数据。目的是更好的理解大脑中动脉中央支的解剖学结构,为临床上大脑中动脉动脉瘤的多发现象提供解剖学支持,并为外侧裂入路治疗脑部疾病的安全性提供解剖学数资料。 材料与方法: 选取自2006年1月至2013年1月间,就诊于吉林大学白求恩第一医院患者所做的人脑动脉的MRA扫描影像,选取标准有:1)小于15岁儿童;2)无影响脑部正常血供的严重心脏疾病,大血管疾病;3)无脑动脉病变,以及影响脑部动脉回流的病变,4)均已排除脑血管畸形,狭窄以及动脉瘤者。采用GE公司的DiscoveryTMMR7503.0T磁共振机对受试者进行头部扫描,所得图像传至AW VolumeShare4AW4.5工作站之后再进行后处理进行观测。 结果: 1.大脑中动脉主干是颈内动脉的延续,最终止于岛阈处分叉前,它的长度为左侧12.3±2.1mm,右侧11.9±2.8,管径为左侧3.6±0.4mm,右侧3.4±0.6mm。 2.大脑中动脉内侧群穿支的个数为左侧8.1±1.5支,右侧9.8±1.4支,外侧群穿支的个数为左侧4.6±2.1支,右侧5.1±2.4支。 3.大脑中动脉中央支内侧群穿支的管径为左侧1.0±0.4mm,右侧1.1±0.4mm,大脑中动脉中央支外侧群穿支的管径为左侧1.2±0.4mm,右侧1.1±0.3mm。 4.大脑中动脉的主干上常有一段未发出分支,该段的长度为4.1±0.8mm。 5.大脑中动脉在岛阈处大多会发出多级分支继续走形,常见的大脑中动脉分支有,单干型,双干型以及多干型。本组实验结果显示,单干型约占25%,双干型约占50%,多干型约占25%。 结论: 1.大脑中动脉的主干较短,管径则相对粗大,这两个特点与其走形可支持这一部位成为脑内动脉瘤多发区域。 2.大脑中动脉中央支管径较细,并且以垂直于动脉主干的方式发出,这一特点可有力的支持该部位成为脑出血高发区域。 3.大脑中动脉的内侧群分支多于外侧群,且与动脉瘤关系最为密切的第一分支多为内侧群,在夹闭动脉瘤的手术过程中应给予特别关注。
[Abstract]:Aim: to study the initial aberration, segmentation and external diameter of the central branch of the middle cerebral artery, and to study the characteristics and anatomical data of the perforating branch of the middle cerebral artery. Objective to better understand the anatomical structure of the central branch of the middle cerebral artery, to provide anatomical support for the occurrence of multiple aneurysms of the middle cerebral artery in clinic, and to provide anatomical data for the safety of the lateral fissure approach in the treatment of brain diseases. Materials and methods: from January 2006 to January 2013, MRA images of human brain arteries were obtained from patients in Bethune first Hospital of Jilin University. The selected criteria were as follows: 1) Children younger than 15 years old; 2) serious heart disease, macrovascular disease, 3) cerebral artery disease, and 4) cerebral vascular malformation, stenosis and aneurysm were excluded. GE's DiscoveryTMMR7503.0T magnetic resonance machine was used to scan the head of the subjects. The images were transmitted to the AW VolumeShare4AW4.5 workstation and then observed. Results: 1. The main trunk of the middle cerebral artery is a continuation of the internal carotid artery, which ends before the bifurcation of the island threshold. Its length is 12.3 卤2.1 mm on the left side, 11.9 卤2.8 mm on the right side, 3.6 卤0.4 mm on the left side and 3.4 卤0.6 mm2 on the right side. The number of perforating branches in the medial group of middle cerebral artery was 8.1 卤1.5 on the left, 9.8 卤1.4 on the right, 4.6 卤2.1 on the left and 5.1 卤2.4 on the right. The diameter of the perforating branch of the medial group of the central branch of the middle cerebral artery was 1.0 卤0.4 mm on the left side and 1.1 卤0.4 mm on the right side. The diameter of the perforating branch of the lateral group of the central branch of the middle cerebral artery was 1.2 卤0.4 mm on the left side and 1.1 卤0.3 mm on the right side. The middle cerebral artery (MCA) often has an unbranched branch on its main trunk, the length of which is 4. 1 卤0. 8mmm. 5. The middle cerebral artery (MCA) usually sends out multilevel branches at the island threshold. The common branches of the MCA are single trunk, double trunk and multi trunk. The results show that the single type accounts for 25%, the double type about 50% and the multiple type about 25%. Conclusion: 1. The middle cerebral artery (MCA) has a short trunk and a relatively large diameter. These two characteristics and its shape can support this part of the brain to become a multiple area of aneurysm. 2. 2. The central branch of the middle cerebral artery (MCA) is fine in diameter and issued perpendicular to the artery trunk. This feature can support the high incidence of ICH in this area. 3. 3. The medial branch of the middle cerebral artery is more than the lateral group, and the first branch most closely related to the aneurysm is the medial group, which should be paid special attention during the operation of clipping the aneurysm.
【学位授予单位】:吉林大学
【学位级别】:硕士
【学位授予年份】:2013
【分类号】:R322

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