心肌细胞外体积分数与光谱探测器计算机断层扫描用于非缺血性心力衰竭的风险分层
Jie Deng1,2, Yu Wang3, Tianfu Qi1
1Department of Radiology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming, 650032, China.
La Radiologia medica
|April 30, 2025
概括
谱检测器计算断层扫描衍生的细胞外体积 (CT-ECV) 是心脏磁共振 (CMR) -ECV的可行的替代方案,用于评估非缺血性心力衰竭 (NIHF). CT-ECV可以帮助NIHF患者分层风险,识别那些更有可能发生重大心血管不良事件的患者.
科学领域:
- 心血管成像 - 心血管成像
- 医学物理 医学物理
背景情况:
- 使用光谱探测器计算断层扫描 (SDCT) 获得的晚期增强 (LIE) 获得的细胞外体积 (ECV) 提供了潜在的非侵入性心肌评估方法.
- 非缺血性心力衰竭 (NIHF) 需要准确的风险分层来指导患者管理和改善结果.
研究的目的:
- 用SDCT验证CT-ECV的可行性,该CT-ECV是从LIE获得的,用于使用密度图像SDCT.
- 评估CT-ECV对NIHF患者风险分层的潜力.
主要方法:
- 该研究包括一个验证组 (45名受试者),将CT-ECV与心磁共振 (CMR) -ECV进行比较,以及一个实验组 (117名受试者,包括82名NIHF患者),以探索CT-ECV的风险分层潜力.
- 使用来自SDCT和CMR T1映射的密度图像进行ECV测量,遵循美国心脏协会16段模型.
主要成果:
- 在验证组中,CT-ECV与CMR-ECV相比没有显著差异.
- 在实验组中,NIHF患者的CT-ECV显著高于对照组.
- 在NIHF队列中,CT-ECV水平在不同的射出分数类别 (HFrEF,HFmEF,HFpEF) 和纽约心脏协会类别中有显著差异. 31.29%的CT-ECV值确定了NIHF患者具有显著更高的重大心血管不良事件 (MACE) 的概率.
结论:
- 使用SDCT的LIE衍生CT-ECV是CMR-ECV的实用和有前途的替代方案.
- 在被诊断为NIHF的患者中,CT-ECV显示出作为风险分层工具的潜力.
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