| 摘要: |
| 目的：分析性先天性颈内动脉缺如的影像学特点。方法：回顾分析1例先天性颈内动脉缺如的临床症状和影像学特点。结果：超声表现为左侧甲状腺上动脉起源于左侧颈总动脉，左侧颈总动脉远端分支未见入颅内的颈内动脉样管腔及血流频谱，且远端分支血流阻力指（RI）较高似颈外动脉样频谱，左侧颈部血管管腔较对侧细。头颈CTA显示左侧颈内动脉不显影，左侧大脑前动脉由对侧大脑前动脉供血，大脑A1段缺如，左侧大脑中动脉由椎基底动脉供血，左侧颈动脉管缺如，确诊为先天性颈内动脉缺如。结论：超声检查便捷、价廉、安全、可实时动态观察，可以作为初步筛查的重要手段，早发现、早预防以减少脑卒中发生的风险。 |
| 关键词: 超声 颈内动脉缺如 |
| DOI： |
| 投稿时间：2023-03-28修订日期：2023-09-12 |
| 基金项目: |
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| Imaging characteristics of a case of congenital absence of internal carotid artery |
| zhaoxiaoyan,zhangjie,tanghaixia,jingxiangxiang |
| (Hainan Provincial People''s Hospital) |
| Abstract: |
| Objective: To analyze the imaging characteristics of congenital absence of internal carotid artery. Methods: The clinical symptoms and imaging characteristics of a case of congenital absence of internal carotid artery were retrospectively analyzed. Results: The ultrasound findings showed that the left superior thyroid artery originated from the left common carotid artery, and the distal branch of the left common carotid artery did not have an internal carotid artery like lumen and blood flow spectrum entering the intracranial region. The distal branch had a high blood flow resistance index (RI) that resembled an external carotid artery like spectrum, and the left cervical vascular lumen was thinner than the contralateral side. CTA of the head and neck showed that the left internal carotid artery was not developed, and the left anterior cerebral artery was supplied by the opposite anterior cerebral artery. The A1 segment of the brain was absent. The left middle cerebral artery was supplied by the vertebrobasilar artery, and the left carotid canal was absent. The diagnosis was confirmed as congenital absence of internal carotid artery. Conclusion: Ultrasound examination is convenient, inexpensive, safe, and real-time dynamic observation. It can be used as an important means of preliminary screening, early detection, and early prevention to reduce the risk of stroke. |
| Key words: ultrasound Absence of internal carotid artery |
