That between the upper and lower segmental vessels consists a relatively non-vascular nerve safe zone where the intervertebral space locates.
上、下位节段动脉间构成了一个相对无血管、神经的安全区,椎间隙恰好位于该安全区中部。
参考来源 - 胸腰结合段侧面血管的影像解剖学研究In real-time update algorithm of nearest neighbor query of moving objects, safe area is always an irregular convex polygon which is difficult to solve.
在移动对象最近邻查询实时更新算法中，安全区一般是难以求解的不规则凸多边形。
参考来源 - 移动对象最近邻查询实时更新算法·2,447,543篇论文数据，部分数据来源于NoteExpress
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