Hakim Arsany, Gralla Jan, Rozeik Christoph, Mordasini Pasquale, Leidolt Lars, Piechowiak Eike, Ozdoba Christoph, El-Koussy Marwan
University Institute of Diagnostic and Interventional Neuroradiology, Bern University Hospital, Inselspital, University of Bern, Bern, Switzerland.
Radiology Department, Lörrach District Hospital, Lörrach, Germany.
J Neuroimaging. 2018 Jan;28(1):14-35. doi: 10.1111/jon.12475. Epub 2017 Sep 25.
Cerebral arteries may exhibit a wide range of variation from normal anatomy, which can be incidentally discovered during imaging. Knowledge of such variants is crucial to differentiate them from pathologies, to understand the etiology of certain pathologies directly related to a vascular variant, and to depict the changes in collateral circulation in patients with certain variants. Detection of particular variants may lead to the discovery of other nonvascular or vascular anomalies, especially aneurysms, and may also affect planning of endovascular or neurosurgical interventions. In this review, we summarize the variants and anomalies of cerebral arteries seen on cross-sectional imaging classified by a morphological approach and categorize their significance from a clinical perspective. This structured review is intended to serve as a guide for daily use in clinical practice.
脑动脉可能呈现出与正常解剖结构的广泛差异，这些差异可在影像学检查时偶然发现。了解此类变异对于将它们与病变相区分、理解与血管变异直接相关的某些病变的病因以及描绘某些变异患者侧支循环的变化至关重要。特定变异的检测可能会导致发现其他非血管或血管异常，尤其是动脉瘤，还可能影响血管内或神经外科干预的规划。在本综述中，我们总结了通过形态学方法分类的横断面成像上所见的脑动脉变异和异常，并从临床角度对其重要性进行分类。这种结构化综述旨在作为临床实践日常使用的指南。
