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冠状动脉CT血管学的分数流量储备与复杂CAD中的定量流量比率相比

Kotaro Miyashita¹, Yoshinobu Onuma¹, Asahi Oshima¹

¹Department of Cardiology, University of Galway, Galway, Ireland; CORRIB Research Centre for Advanced Imaging and Core Lab, University of Galway, Galway, Ireland.

Journal of cardiovascular computed tomography

|September 22, 2025

概括

从计算机断层扫描 (FFR_CT) 获得的定量流量比率 (QFR) 和分量流量储备显示了类似的整体估计,但在近端分叉处的损伤严重程度评估上有所不同. 这影响了复血管化决定和病变表型分类.

科学领域:

心血管成像和干预方法
心脏病学中的计算流体动力学
冠状动脉疾病评估

背景情况:

经常假设非侵入性FFR_CT和侵入性血管学衍生的QFR和μFR之间的诊断一致性.
准确评估冠状动脉疾病的严重程度对于指导复血管化策略至关重要.

研究的目的:

评估FFR_CT,QFR和μFR在患有多血管冠状动脉疾病的患者的诊断一致性.
为了比较这些方法分类病变表型 (扩散与焦点) 的能力.

主要方法:

从FASTTRACK CABG试验中对114名患有de-novo三血管和/或左主冠状动脉疾病的患者进行后期分析.
冠状动脉CT血管图 (CCTA) 和侵入性冠状动脉血管图 (ICA) 的数据在核心实验室中分析.
计算了FFR_CT,QFR和μFR在分叉点;虚拟PPGi评估了病变表型.

主要成果:

在199个血管中,FFR_CT (0.70),QFR (0.71) 和μFR (0.69) 的平均远距离估计是相似的.
在近端分叉处,QFR明显高于FFR_CT和μFR,可能低估了病变严重程度.
在FFR_CT,QFR和μFR (卡帕<0.16) 之间,损伤表型分类的一致性很差.

结论:

在近端二叉路口中的QFR值可能与FFR_CT和μFR不同,这会影响复血管化决策.
冠状动脉病变的病理生理学分类为扩散或焦点显示评估方法之间的相关性较差.
需要进一步调查,以了解病变严重程度和表型评估差异的临床影响.

关键词:

冠状动脉疾病是一种冠状动脉疾病.微分流量储备来自计算机断层扫描血管造影.多血管疾病是多血管疾病.基于穆雷定律的定量流量比率.量化流量比率是一种量化流量比率.

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