The Christ Hospital Health Network, The Lindner Research Center, Cincinnati, Ohio, USA.
The Sue and Bill Butler Research Fellow, The Lindner Research Center, Cincinnati, Ohio, USA.
Sci Rep. 2020 Mar 23;10(1):5237. doi: 10.1038/s41598-020-62105-9.
Speckle tracking echocardiography (STE), and more recently, cardiovascular magnetic resonance myocardial feature tracking (CMR-FT) provides insight into all phases of atrial function. The aim of our study was to compare all phases of RA strain using CMR-FT and STE and also assess the relationship between RA and LA strain. A total of 61 healthy volunteers with mean age of 45 ± 13 years had adequate tracking for analysis on CMR-FT and 2D-STE. Females had larger RA reservoir strain (39 ± 15% vs. 32 ± 13%, p = 0.046) and conduit strain (26 ± 12% vs. 20 ± 9%, p = 0.03) when compared to males, but was not the case with booster strain (14 ± 7% vs. 12 ± 6%, p = 0.45). In comparison with STE derived strain, the RA reservoir and conduit strain were not significantly different between CMR-FT and the three echocardiography gating methods (p > 0.05 for all). Noticeably, there were no significant differences in strain and strain rate between RA and LA function using CMR-FT (p > 0.05 for all). RA strain and strain rate using CMR-FT had fair and good intra- and inter-observer reproducibility and had superior reproducibility compared to STE derived strain.
斑点追踪超声心动图（STE），以及最近的心血管磁共振心肌特征追踪（CMR-FT），可以深入了解心房功能的所有阶段。我们的研究目的是比较 CMR-FT 和 STE 测量的右房（RA）各阶段应变，并评估 RA 和 LA 应变之间的关系。共有 61 名平均年龄为 45±13 岁的健康志愿者在 CMR-FT 和二维 STE 上有足够的追踪分析。与男性相比，女性的 RA 储备应变（39±15%比 32±13%，p=0.046）和射血应变（26±12%比 20±9%，p=0.03）更大，但增强应变（14±7%比 12±6%，p=0.45）并非如此。与 STE 衍生的应变相比，CMR-FT 和三种超声心动图门控方法之间的 RA 储备应变和射血应变没有显著差异（所有 p 值>0.05）。值得注意的是，使用 CMR-FT 时 RA 和 LA 功能之间的应变和应变率没有显著差异（所有 p 值>0.05）。CMR-FT 测量的 RA 应变和应变率具有良好的观察者内和观察者间可重复性，并且比 STE 衍生的应变具有更好的可重复性。
