Department of Neurological Surgery, University of California, San Francisco, California, USA.
J Neurosurg. 2011 Aug;115(2):387-97. doi: 10.3171/2011.3.JNS101413. Epub 2011 May 6.
The conceptual division of intracranial arteries into segments provides a better understanding of their courses and a useful working vocabulary. Segmental anatomy of cerebral arteries is commonly cited by a numerical nomenclature, but an analogous nomenclature for cerebellar arteries has not been described. In this report, the microsurgical anatomy of the cerebellar arteries is reviewed, and a numbering system for cerebellar arteries is proposed.
Cerebellar arteries were designated by the first letter of the artery's name in lowercase letters, distinguishing them from cerebral arteries with the same first letter of the artery's name. Segmental anatomy was numbered in ascending order from proximal to distal segments.
The superior cerebellar artery was divided into 4 segments: s(1), anterior pontomesencephalic segment; s(2), lateral pontomesencephalic segment; s(3), cerebellomesencephalic segment; and s(4), cortical segment. The anterior inferior cerebellar artery was divided into 4 segments: a(1), anterior pontine segment; a(2), lateral pontine segment; a(3), flocculopeduncular segment; and a(4), cortical segment. The posterior inferior cerebellar artery was divided into 5 segments: p(1), anterior medullary segment; p(2), lateral medullary segment; p(3), tonsillomedullary segment; p(4), telovelotonsillar segment; and p(5), cortical segment.
The proposed nomenclature for segmental anatomy of cerebellar artery complements established nomenclature for segmental anatomy of cerebral arteries. This nomenclature is simple, easy to learn, and practical. The nomenclature localizes distal cerebellar artery aneurysms and also localizes an anastomosis or describes a graft's connections to donor and recipient arteries. These applications of the proposed nomenclature with cerebellar arteries mimic the applications of the established nomenclature with cerebral arteries.
颅内动脉的节段性划分有助于更好地理解其走行，并提供有用的工作术语。大脑动脉的节段解剖学通常采用数字命名法，但尚未描述类似的小脑动脉命名法。本报告回顾了小脑动脉的显微解剖，并提出了小脑动脉的编号系统。
小脑动脉用小写字母的动脉名称的首字母命名，与具有相同首字母的大脑动脉区分开来。节段性解剖学按从近到远的顺序编号。
小脑上动脉分为 4 段：s(1)，前脑桥中脑节段；s(2)，外侧脑桥中脑节段；s(3)，脑桥小脑节段；s(4)，皮质段。小脑前下动脉分为 4 段：a(1)，前桥脑段；a(2)，外侧桥脑段；a(3)，绒球脚间段；a(4)，皮质段。小脑后下动脉分为 5 段：p(1)，前髓段；p(2)，外侧髓段；p(3)，扁桃体髓段；p(4)，远侧扁桃体小脑段；p(5)，皮质段。
提出的小脑动脉节段解剖学命名法补充了大脑动脉节段解剖学的命名法。该命名法简单、易学、实用。该命名法可定位小脑动脉远端动脉瘤，也可定位吻合口或描述移植物与供体和受体动脉的连接。小脑动脉的命名法的这些应用与大脑动脉的既定命名法的应用相似。
