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在输血依赖的血病患者中,从MRI获得的心肌收缩率的表现和相关性

Antonella Meloni¹, Luca Saba², Laura Pistoia³

¹Bioengineering Unit, Fondazione G, Monasterio CNR-Regione Toscana, Pisa, Italy.

Journal of magnetic resonance imaging : JMRI

|August 20, 2025

概括

在输血依赖性血症患者中,心肌收缩率 (MCF) 与心肌铁过量和纤维化相关. 损坏的MCF表明心力衰竭的病史,突出其临床意义.

科学领域:

心脏病学
放射学
血液学

背景情况:

心肌收缩率 (MCF) 是评估心肌功能的新兴体积指数.
输血依赖性沙拉西米亚 (TDT) 患者由于铁过载而面临心脏并发症的风险.

研究的目的:

在TDT患者中研究MRI衍生的MCF与人口,临床和MRI特征之间的关系.
在TDT中评估MCF与心力衰竭史的关联.

主要方法:

对1154名TDT患者和167名健康对照者的回顾性分析.
使用1.5T/cineMRI用于LV功能,T2*用于心肌铁过载 (MIO),以及LGE用于纤维化.
统计分析包括回归,相关性和ROC曲线分析.

主要成果:

在TDT患者和健康人群中,MCF值相似,但在TDT男性和糖尿病患者中较低.
MCF与年龄,MIO (T2* < 20毫秒) 和LGE阳性段相反相关.
在确定心力衰竭史时,MCF的诊断性能与全球心脏T2*相当 (AUC为0. 63对0. 58).

结论:

在TDT患者中,MCF与MIO和LGE程度有显著的关联.
降低MCF与此群体的心力衰竭史有关.
在TDT中,MCF是心脏健康的重要指标.

关键词:

铁过载心肌收缩分数输血依赖性沙拉西米亚

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Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...