头颈CT血管成像临床应用研究与技术进展

Advances in clinical application research and technology of head and neck CT angiography

摘要:

常规CT难以评估头颈动脉狭窄、闭塞等引起的血管性病变，无法显示血管走行变异、畸形、狭窄程度、侧支循环及斑块特性等。CT血管成像（CT angiography，CTA）是一种非侵入式快速评价头颈血管系统的影像学技术。本文首先总结了CTA与头颈血管解剖和分段基础，基于CTA筛查头颈血管系统形态和解剖的优势，综述了其在常见脑血管疾病诊断中的应用、相关新技术进展及优缺点，最后对其未来发展方向进行了总结与展望。

Abstract:

It is difficult for conventional computed tomography（computed tomography，CT） to assess vascular disease caused by head and carotid artery stenosis，occlusion，etc.，failing to show vascular variation，malformation，narrow degree，collateral circulation and plaque characteristics. Computed tomography angiography（CT angiography，CTA） is a non-invasive imaging technology for rapid e－valuation of the head and neck vascular system. This paper first summarizes the correlation between CTA and anatomy and segmenta－tion basis of head and neck vessels. Then，based on the advantage of CTA in screening the anatomy and morphology of the head and neck vascular system，the application referring to the diagnosis of common cerebrovascular diseases，the progress of new technologies and the corresponding advantages and limitations has been reviewed. Finally，the future development direction of CTA is prospected.