Accurate knowledge of the variant origin of the vertebral arteries (VAs) is important in vascular surgery and angiographic procedures in the neck. A triple origin of the VA is extremely rare. We report the first adult case of triple origin of the right VA from the right subclavian artery (SA). This report demonstrates magnetic resonance (MR) angiography findings of this unusual anatomic variation .

中文翻译：

---

椎动脉的三重异常起源和颈部融合。

椎动脉（VAs）的变异起源的准确知识在颈部的血管外科手术和血管造影术中很重要。VA的三重起源非常罕见。我们报告了第一例来自右锁骨下动脉（SA）的右VA三重起源的成人病例。该报告证明了这种异常解剖变化的磁共振血管造影结果。