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Left ventricular and atrial strain imaging with cardiac computed tomography: Validation against echocardiography.

心脏计算机断层扫描左心室和心房应变成像: 超声心动图验证。

  • 影响因子:2.84
  • DOI:10.1016/j.jcct.2019.12.004
  • 作者列表:"Szilveszter B","Nagy AI","Vattay B","Apor A","Kolossváry M","Bartykowszki A","Simon J","Drobni ZD","Tóth A","Suhai FI","Merkely B","Maurovich-Horvat P
  • 发表时间:2020-01-01
Abstract

BACKGROUND:Data on left ventricular (LV) deformation imaging using CT angiography (CTA) are scarce and the feasibility of atrial deformation analysis by CT has not been addressed. We aimed to compare 2D echocardiographic and CT derived LV and left atrial (LA) global longitudinal strain (GLS) obtained by using a novel feature tracking algorithm in patients following transcatheter aortic valve implantation. METHODS:Twenty-eight patients were included who underwent retrospectively-gated 256-slice CTA and speckle-tracking echocardiography (STE) on the same day. CT datasets in 10% increments were reconstructed throughout the cardiac cycle. LV GLS and LA global peak reservoir strain (LA GS) was measured. RESULTS:Median absolute values for LV GLS were 19.9 [14.8-22.4] vs. 19.9 [16.8-24.7], as measured by CT vs STE, respectively (p = 0.017). We found good inter-modality correlation for LV GLS (ρ = 0.78, p < 0.05) with a mean bias of -1.6. Regarding atrial measurements, the median LA GS was 19.0 [13.5-27.3] for CT vs. 28.0 [17.5-32.6] for STE (p < 0.001) with a mean bias of -5.6 between CT and STE and a correlation coefficient of ρ = 0.87, p < 0.001. CT measurements were highly reproducible: intra-observer intra-class correlation coefficient was 0.96 for LV GLS and 0.95 for LA GS. CONCLUSION:We detected good correlation between CTA and echocardiography-based LV and LA longitudinal strain parameters. CTA provides accurate strain measurements with high reproducibility. Feature tracking-based deformation analysis could provide a clinically important addition to CT examinations by complementing anatomical information with functional data.

摘要

背景: 利用CT血管造影 (CTA) 进行左心室 (LV) 变形成像的数据很少,并且利用CT进行心房变形分析的可行性尚未得到解决。我们的目的是比较在经导管主动脉瓣植入术后患者中使用一种新的特征跟踪算法获得的二维超声心动图和CT衍生的LV和左心房 (LA) 全局纵向应变 (GLS)。 方法: 28例患者于同日接受回顾性门控256层CTA和斑点追踪超声心动图 (STE) 检查。在整个心动周期中以10% 增量重建CT数据集。测量LV GLS和LA全局峰值储层应变 (LA GS)。 结果: 通过CT和STE分别测量,LV GLS的中值绝对值分别为19.9 [14.8-22.4] 和19.9 [16.8-24.7] (p = 0.017)。我们发现LV GLS具有良好的模态间相关性 (ρ = 0.78,p <0.05),平均偏倚为-1.6。关于心房测量,CT的中位LA GS为19.0 [13.5-27.3],STE为28.0 [17.5-32.6] (p <0.001),CT和STE之间的平均偏差为-5.6,相关系数 ρ = 0.87,p <0.001。CT测量是高度可重复的: 对于lvgls,观察者内类内相关系数为0.96,对于lags,为0.95。 结论: CTA与基于超声心动图的LV和LA纵向应变参数之间具有良好的相关性。CTA提供具有高再现性的精确应变测量。通过用功能数据补充解剖信息,基于特征跟踪的变形分析可以为ct检查提供临床上重要的补充。

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影响因子:2.41
发表时间:2020-06-12
DOI:10.4244/EIJ-D-18-01138
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影响因子:1.67
发表时间:2020-01-01
DOI:10.2174/1573403X15666190513105231
作者列表:["Dev M","Sharma M","Rana N"]

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心脏影像技术方向

心脏结构和心脏血流的可视化,用于诊断评估或通过内窥镜、放射性核素成像等技术来指导心脏手术。

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