犬胸腰段选择性脊髓动脉造影的解剖学研究

Applied anatomy of the angoigraphy of selective spinal cord arteries on thoracolumbar region of canine

目的 :为犬胸腰段选择性脊髓动脉造影 (SSCA)实验提供解剖学依据。方法 :7只犬行动脉乳胶灌注 ,观测与选择性肋间 (腰 )动脉插管相关的指标。结果 :每例起始于降主动脉的肋间 (腰 )动脉 32～ 35支 ,多成对 ;起始高度多在相应上一个椎体、椎间隙平面 ;起始方位以后中壁和后外侧壁居多 ;从颅侧向尾侧 ,与降主动脉下夹角渐减 ,起点间距离渐增 ;始端内径小于 4F导管管径 ;每对动脉的起始处多不在同一水平面上。结论 :犬肋间 (腰 )动脉有其特殊性 ,选用适宜导管 ,参照相关解剖学资料 ,可有效行犬胸腰段SSCA。

Objective:To provide antomical basis for the angoigraphy of selective spinal cord arteries on thoracic and lumbar region of canine.Methods:The origins,types,heights,locations,angles and diameters of the thoracolumbar segemental arteries were observed and measured on 7 adult mongrel dogs after perfused with red latex.Results:Bilateral symmetry,there are about 32～35 pairs of selective arteries.Expect for the first 2 or 3 pairs,they originate from dorsal decending aorta at the level of neighbor cranial vertebral body or intervertebral disc.From cranium to cauda,the angle between the artery and aorta decrease while the interartery distance increase.The inner diameters of the arteries were smaller than that of 4F catheter.Conclusion:It is feasible to perform the SSCA in canine by means of selective catheterization.