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Updated: Sep 14, 2025

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

亚临床化动脉样硬化和冠状动脉微血管功能障碍之间的相互作用在正常 perfusion 成像患者

Krishna K Patel^1,2, Phillip A Lim¹, Raed Qarajeh²

¹Icahn School of Medicine at Mount Sinai, New York, NY, United States of America.

American heart journal plus : cardiology research and practice

|July 24, 2025

概括

冠状动脉微血管功能障碍 (CMD) 经常与冠状动脉化 (CAC) 共同存在,即使在正常的心脏 perfusion 扫描中. 增加的CAC负担与CMD的可能性更高有关,但它的缺失并不排除这种情况.

科学领域:

心脏病学心脏病学
血管生物学血管生物学
医疗成像医学成像

背景情况:

冠状动脉微血管功能障碍 (CMD) 和心表动脉样硬化经常同时存在,但它们之间的关系尚不清楚,特别是在正常心肌输液成像患者中.
共同的风险因素将这两种情况联系在一起,需要进一步研究它们的相互作用.

研究的目的:

调查冠状动脉化 (CAC) 与冠状动脉微血管功能障碍 (CMD) 之间的关联,在82Rb PET perfusion正常的患者中.
为了确定CAC负担是否预测了CMD在这个特定患者群体中的存在.

主要方法:

进行了对7273名正常82RbPET输液和测量CAC的患者的回顾性分析.
用多种线性和逻辑回归模型来评估CAC和CMD之间的关联 (定义为MBFR<2),并根据各种临床因素进行调整.

主要成果:

44%的患者患有CMD,74%的患者患有CAC>0. 在CMD患者中,79%的CAC>0.
每增加100个单位的CAC与患上CMD的几率增加4% (OR1.04) 相联系.
老年,女性性别,糖尿病和呼吸障碍等因素也预测了较低的MBFR,但总的来说只解释了20%的差异.

结论:

增加的CAC负担与正常输液成像患者中CMD的可能性更高,表明频繁的同时发生.
没有CAC并不排除CMD的可能性.

关键词:

冠状动脉分数冠状动脉分数冠状动脉疾病是一种冠状动脉疾病.冠状动脉的流量储备.微血管功能障碍是什么肌心输液成像 - - 肌心输液成像定子发射断层扫描 (PET) 是一种定子发射断层扫描.

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