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在正常人群中使用回顾性多相计算机断层扫描对大动脉根运动进行四维分析

Xun Yuan^1,2, Xiaoxin Kan^3,4, Jianpeng Li⁵

¹Cardiology and Aortic Centre, Royal Brompton & Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, Sydney Street, London SW3 6NP, UK.

European heart journal. Imaging methods and practice

|July 24, 2024

概括

从动态CT成像中量化三维大动脉根运动是可行的. 这项研究测量了大动脉根的移位和旋转,提供了对大动脉形病的生物力学影响的见解.

科学领域:

心血管成像 - 心血管成像
生物机械分析分析
大动脉疾病研究研究

背景情况:

大动脉根运动与近道大动脉剖析有关.
目前对大动脉根位移和旋转的定量评估是有限的.
了解大动脉根生物力学对于治疗大动脉损伤至关重要.

研究的目的:

用动态CT成像来证明量化三维大动脉根运动的可行性.
建立一种方法来测量大动脉根的移位和旋转 in vivo.
为大动脉根运动提供规范性数据.

主要方法:

利用40名冠状动脉评估患者的动态CT扫描.
通过心电图触发的扫描被细分为每个心脏周期的10个阶段.
创建了一个针对患者的坐标系统,以量化大动脉根的外平面,内平面和旋转运动.

主要成果:

最大的平面外运动: 10.26 ± 2.20 毫米 (左冠状动脉骨架) 和 8.67 ± 1.69 毫米 (右冠状动脉骨架).
大动脉根的平均向下运动为9.13±1.86毫米.
最大的平面内运动: 9.17 ± 2.33 毫米 (左) 和 6.51 ± 1.75 毫米 (右). 大动脉根的旋转测量为11.8 ± 4.60°.

结论:

大动脉根的空间和时间位移可以从多相心电图 (ECG-gated) 增强对比度的CT图像中量化.
这种技术可以在体内评估大动脉根运动.
了解正常的大动脉根运动有助于了解大动脉病变中的生物力学作用,并指导治疗决策.

关键词:

一个大动脉动脉瘤.大动脉切割剖析.大动脉根运动动态成像图像处理系统多相CTCT 多相CTCT 根部的移位根部的移位根部的移位

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