Cardiovascular magnetic resonance feature-tracking assessment of myocardial mechanics: Intervendor agreement and considerations regarding reproducibility
Cardiovascular magnetic resonance feature-tracking assessment of myocardial mechanics: Intervendor agreement and considerations regarding reproducibility
复制标题
DOI：
10.1016/j.crad.2015.05.006
复制
发表时间：
2015-09-01
影响因子：
2.6
通讯作者：
Lotz, J.
中科院分区：
文献类型：
--
作者：
Schuster, A.;Stahnke, V. -C.;Lotz, J.
目的：为了评估供应商之间的协议，心血管磁共振功能跟踪（CMR-FT），并研究重复测量reproducibility.MATERIALS和METHODS的影响：10名健康志愿者进行了电影成像在短轴方向在休息和多巴酚丁胺刺激（10和20微克/公斤/分钟）。使用两种类型的软件（TomTec，翁特施莱桑，德国和Circle，cvi（42），卡尔加里，加拿大）对所有图像进行三次分析，以评估整体左心室周向（Ecc）和径向（Err）应变和扭转。根据Bland-Altman分析、组内相关系数（ICC）和变异系数（CoV）确定的单次和平均测量值（分别重复两次和三次，随后取结果平均值），评估了软件类型内和软件类型之间观察者内和观察者间变异性的差异。
AIM: To assess intervendor agreement of cardiovascular magnetic resonance feature tracking (CMR-FT) and to study the impact of repeated measures on reproducibility.MATERIALS AND METHODS: Ten healthy volunteers underwent cine imaging in short-axis orientation at rest and with dobutamine stimulation (10 and 20 mu g/kg/min). All images were analysed three times using two types of software (TomTec, Unterschleissheim, Germany and Circle, cvi(42), Calgary, Canada) to assess global left ventricular circumferential (Ecc) and radial (Err) strains and torsion. Differences in intra-and interobserver variability within and between software types were assessed based on single and averaged measurements (two and three repetitions with subsequent averaging of results, respectively) as determined by Bland-Altman analysis, intraclass correlation coefficients (ICC), and coefficient of variation (CoV).RESULTS: Myocardial strains and torsion significantly increased on dobutamine stimulation with both types of software (p