左心室大小和功能的定量评估:实时三维心声谱和磁共振参考计算机断层扫描的并排比较
Lissa Sugeng1, Victor Mor-Avi, Lynn Weinert
1University of Chicago, MC5084, 5841 S Maryland Ave, Chicago, IL 60637, USA. lsugeng@medicine.bsd.uchicago.edu
Circulation
|August 9, 2006
概括
心脏CT (CCT) 和实时3D心声回声 (RT3DE) 测量左心室功能与心脏MR (CMR) 相比较. CCT高估了体积,而RT3DE显示出与CMR更好的一致性,但变化更高.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
背景情况:
- 心脏CT (CCT) 和实时3D回声心脏成像 (RT3DE) 在临床心脏病学中越来越多地被使用.
- CCT提供高空间和对比分辨率用于内心界定.
- RT3DE提供低成本,便携式,现场3D成像.
研究的目的:
- 将左心室大小和功能的CCT和RT3DE测量与心脏MR (CMR) 进行比较.
主要方法:
- 31名患者在同一天接受了CCT,RT3DE和CMR成像.
- 使用一致的旋转分析分析左心室末缩和末缩体积和射出分数.
- 评估了技术间的协议和观察者内部/观察者间的变化.
主要成果:
- 无论是CCT还是RT3DE,都与CMR有很高的相关性 (r2 > 0.85).
- CCT显著高估了体积 (26mL末透,19mL末缩) 并引入了射出分数的-2.8%偏差.
- RT3DE显示了体积的最小低估 (5mL终端-透气,6mL终端-缩) 没有显著的射出分数偏差 (0.3%).
- 与RT3DE或CMR相比,CCT测量显示了大约一半的变化.
结论:
- CCT提供高度可重现的左心室体积测量,尽管这些比CMR值大得多.
- 尽管RT3DE测量显示出更高的可变性,但其与CMR参考标准的一致性更好.
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