同源心脏CT和CMR量化心室体积和功能在先天性心脏病中的比较
Nikhil Patel1, Jennifer Cohen1, Hari G Rajagopal2
1Department of Pediatrics (Cardiology), Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Journal of cardiovascular computed tomography
|July 2, 2025
概括
心脏CT (CCT) 在先天性心脏病患者中高估了右心室体积,低估了心脏MRI (CMR) 与心脏MRI相比的射出分数. 调整CCT体积可能有助于肺置换决定.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 遗传性心脏病是一种先天性心脏病.
背景情况:
- 在肺置换 (PVR) 之前,心脏CT (CCT) 对于评估先天性心脏病 (CHD) 解剖学至关重要.
- 目前的PVR标准依赖于心脏MRI (CMR) 的体积和功能数据.
- 在心血管疾病患者中,CCT和CMR体积之间的系统差异仍未得到充分研究.
研究的目的:
- 为了比较心室体积和心脏病患者中CCT和CMR之间的射出分数.
- 评估CCT与CMR衍生的PVR标准的一致性.
- 确定导致CCT和CMR测量差异的因素.
主要方法:
- 在180天内对CMR和单源CCT的CHD患者的回顾性审查.
- 盲人专家对心室体积进行独立的重构.
- 全球和区域心室轮的比较和PVR标准的评估协议.
主要成果:
- 与CMR相比,CCT显示右心室末透 (RVEDVi) 和末缩 (RVESVi) 体积 (+17mL/m2) 和RVEDV:LVEDV比率 (+0.1) 显著更高.
- 右心室喷射分数 (RVEF) 在CCT上较低 (MD -5%).
- CCT表现出高灵敏度 (90-100%),但较低的特异性和PPV用于识别CMR定义的PVR值.
结论:
- 单源CCT倾向于在心脏病中比CMR显示更不利的心室重塑 (更高的体积,更低的EF).
- 异常可能源于呼吸指令和末尾心的识别.
- 将CMR值直接应用于CCT可能会导致更早的干预;需要进行模式特定的调整或建议.
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