Computed tomography angiography in the planning of transcatheter aortic valve replacement: a step-by-step approach

Abstract Aortic valve stenosis is the most common acquired valvular heart disease. Transcatheter aortic valve implantation, also known as transcatheter aortic valve replacement (TAVR), is an important treatment option for symptomatic aortic stenosis in patients at any level of surgical risk. The role of computed tomography angiography (CTA) has expanded considerably in recent years, and it has now become the imaging method of choice for the planning of TAVR. Therefore, radiologists should understand the main aspects of this imaging modality, including the appropriate technique and protocol to acquire reliable CTA images and to create a useful radiology report. The aim of this study was to review the most important aspects of CTA for TAVR planning.

摘要 主动脉瓣狭窄是临床最常见的获得性瓣膜性心脏病。经导管主动脉瓣植入术，亦称经导管主动脉瓣置换术（Transcatheter Aortic Valve Replacement, TAVR），是适用于各手术风险分层的症状性主动脉瓣狭窄患者的重要治疗方案。近年来，计算机断层血管造影（Computed Tomography Angiography, CTA）的应用范畴大幅拓展，目前已成为TAVR术前规划的首选影像学检查手段。因此，放射科医师需掌握该成像技术的核心要点，包括获取可靠CTA影像的规范操作流程与扫描方案，以及撰写实用放射学报告的方法。本研究旨在综述经导管主动脉瓣置换术术前规划相关CTA检查的关键内容。