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影像模式对冠状动脉血管重建和计算局部血液动力学力的影响

Anantharaman Ramasamy¹, Akash Sivananthan², Amear Mohammed³

¹Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, United Kingdom; Centre for Cardiovascular Medicine and Devices, William Harvey Research Institute, Queen Mary University London, United Kingdom; Homerton University Hospital, United Kingdom.

Atherosclerosis

|July 31, 2025

概括

内皮切割应力 (ESS) 可以使用混合近红外光谱内血管超声波 (NIRS-IVUS) 重建来准确评估. 计算机断层扫描冠状动脉扫描 (CCTA) 也显示出评估冠状动脉中的血液动力学模式的希望.

科学领域:

心血管成像 - 心血管成像
生物医学工程生物医学工程
血液动力学血液动力学

背景情况:

内皮切割应力 (ESS) 是脆弱斑块形成和不稳定的关键因素.
传统的ESS计算依赖于融合的血管内成像和血管造影模型.
3D定量冠状动脉血管学 (3D-QCA) 和计算机断层扫描冠状动脉血管学 (CCTA) 为流动模式评估提供了替代方法,但它们的性能需要进一步验证.

研究的目的:

为了比较不同的成像模式在估计内皮切割应力 (ESS) 的准确性.
评估3D-QCA,CCTA和混合NIRS-IVUS模型在评估血液动力学模式中的性能.
确定在冠状动脉病变中计算ESS的最可靠方法.

主要方法:

分析了27名接受冠状动脉血管学,CCTA和NIRS-IVUS的患者 (38个血管) 的数据.
创建了四个重建模型:3D-QCA,CCTA,Angio-NIRS-IVUS (NIRS-IVUS与3D-QCA),以及CCTA-NIRS-IVUS (NIRS-IVUS与CCTA). 这四个重建模型都是一个复杂的模型.
最小和最大的ESS被计算为3毫米段和病变部位,CCTA-NIRS-IVUS作为参考标准.

主要成果:

在3毫米段中,与3D-QCA相比,Angio-NIRS-IVUS和CCTA在最小和最大ESS方面与CCTA-NIRS-IVUS的相关性更高.
在损伤层面上,只有CCTA-NIRS-IVUS和Angio-NIRS-IVUS与最低ESS相关.
对于最大的ESS在损伤水平,CCTA-NIRS-IVUS和Angio-NIRS-IVUS显示出比3D-QCA更强的相关性.

结论:

基于混合NIRS-IVUS的重建显示出对ESS估计的强烈关联.
CCTA成为评估当地的血液动力学环境的第二个最佳模式.
这些发现突显了先进的成像技术的潜力,用于评估冠状动脉血液动力学.

关键词:

模拟血液流动的模拟计算机断层扫描冠状动脉血管学冠状动脉动脉扫描 (Coronary angiography) 是一种冠状动脉动脉扫描.血管内超声波血管内超声波

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