Zhu Wenying, Wang Yingliang, Chen Yang, Liu Jiacheng, Zhou Chen, Shi Qin, Huang Songjiang, Yang Chongtu, Li Tongqiang, Xiong Bin
Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Hubei Key Laboratory of Molecular Imaging, Wuhan, China.
Front Cardiovasc Med. 2022 May 19;9:793722. doi: 10.3389/fcvm.2022.793722. eCollection 2022.
To characterize the difference in aortic dimensions during the cardiac cycle with electrocardiogram (ECG)-gated computed tomography angiography (CTA) and to determine whether other parameters in comparison to diameter could potentially provide a more accurate size reference for stent selection at the aortic arch and the proximal thoracic descending aorta.
The CTA imaging of 90 patients during the cardiac cycle was reviewed. Three anatomic locations were selected for analysis (level A: 1 cm proximal to the innominate artery; level B: 1 cm distal to the left common carotid artery; and level C: 1 cm distal to the left subclavian artery). We measured the maximum diameter, the minimum diameter, the lumen area, the lumen perimeter, and the diameter derived from the lumen area, and the changes of each parameter at each level during the cardiac cycle were compared.
The mean age was 60.9 ± 12.4 years (range, 16-78 years). There was a significant difference in the aortic dimensions during the cardiac cycle ( < 0.001). The diameter derived from the lumen area at all three levels was changed least over time when compared to the area, perimeter, and the maximum aortic diameter (all < 0.01).
The aortic dimensional differences during the cardiac cycle are significant. The aortic diameter derived from the lumen area over other parameters may provide a better evaluation for selecting the size of the stent at the aortic arch and the proximal thoracic descending aorta. A prospective study comparing these different measurement parameters regarding the outcomes is still needed to evaluate the clinical implications.
利用心电图（ECG）门控计算机断层扫描血管造影（CTA）来描述心动周期中主动脉尺寸的差异，并确定与直径相比的其他参数是否可能为主动脉弓和胸降主动脉近端的支架选择提供更准确的尺寸参考。
回顾了90例患者心动周期中的CTA成像。选择三个解剖位置进行分析（A水平：无名动脉近端1 cm处；B水平：左颈总动脉远端1 cm处；C水平：左锁骨下动脉远端1 cm处）。我们测量了最大直径、最小直径、管腔面积、管腔周长以及由管腔面积得出的直径，并比较了心动周期中各水平每个参数的变化。
平均年龄为60.9±12.4岁（范围16 - 78岁）。心动周期中主动脉尺寸存在显著差异（<0.001）。与面积、周长和主动脉最大直径相比，所有三个水平由管腔面积得出的直径随时间变化最小（均<0.01）。
心动周期中主动脉尺寸差异显著。与其他参数相比，由管腔面积得出的主动脉直径可能为主动脉弓和胸降主动脉近端的支架尺寸选择提供更好的评估。仍需要一项比较这些不同测量参数对预后影响的前瞻性研究来评估其临床意义。
