Anatomy, R G Kar Medical College, Kolkata, West Bengal, India.
Anatomy, Diamond Harbour Government Medical College, Diamond Harbour, West Bengal, India.
Surg Radiol Anat. 2024 Oct;46(10):1585-1593. doi: 10.1007/s00276-024-03451-5. Epub 2024 Aug 5.
The variations of Cerebral arterial circle (Circle of Willis) are not rare. The study is done to assess the pattern of the component vessels of its anterior part with regard to Right- Left variations and compare with other studies.
56 formalin fixed cadavers were analyzed. The diameter, length and variations of the following vessels were observed: Anterior Cerebral Artery (proximal A1 segment to distal A2 segment) and anterior communicating artery. Statistical analysis was done by Statistica 14.0.1 software.
53.57% had normal anterior cerebral artery- anterior communicating artery complex. Length and diameter were slightly more on left side. Unilateral hypoplasia, Azygos and Tripple Anterior Cerebral Artery was present in 21.43%, 3.57 and 1.78% respectively. Aplastic, double and fenestration type anterior communicating artery were present in 5.3%, 8.92% and 1.78% respectively.
Anatomical knowledge of variations should be updated regularly for neurosurgeons, radiologists and clinicians to avoid unexpected consequences.
脑动脉环（Willis 环）的变异并不罕见。本研究旨在评估其前部组成血管的模式，包括左右变异，并与其他研究进行比较。
对 56 例福尔马林固定的尸体进行分析。观察以下血管的直径、长度和变异：大脑前动脉（近端 A1 段至远端 A2 段）和前交通动脉。统计分析采用 Statistica 14.0.1 软件进行。
53.57%的患者具有正常的大脑前动脉-前交通动脉复合体。左侧的长度和直径略大。单侧发育不良、奇动脉和三叉大脑前动脉的发生率分别为 21.43%、3.57%和 1.78%。无形成分、双管和孔型前交通动脉的发生率分别为 5.3%、8.92%和 1.78%。
神经外科医生、放射科医生和临床医生应定期更新对变异的解剖学知识，以避免意外后果。
