Comparison of 2D and 3D calculation of left ventricular torsion as circumferential-longitudinal shear angle using cardiovascular magnetic resonance tagging
Comparison of 2D and 3D calculation of left ventricular torsion as circumferential-longitudinal shear angle using cardiovascular magnetic resonance tagging
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DOI：
10.1186/1532-429x-11-8
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发表时间：
2009-04-20
影响因子：
6.4
通讯作者：
Marcus, J. Tim
中科院分区：
文献类型：
--
作者：
Russel, Iris K.;Tecelao, Sandra R.;Marcus, J. Tim
目的：比较左心室（LV）扭转表示为2D和3D之间的周向-纵向（CL）的剪切角定量，使用心血管磁共振（CMR）。方法：CMR标记在6名健康志愿者。由此，使用2D和3D方法计算LV扭转。两种方法之间的交叉相关性进行了评估和比较，使用Bland-Altman analysis.Results：曲线之间的交叉相关性为r（2）= 0.97 +/- 0.02。在曲线之间没有观察到显著的时间延迟。Bland-Altman分析显示两种分析方法的差异与平均值之间存在显著的正线性关系，2D结果显示的值大于3D。这两种方法之间的差异可以解释的2D method.Conclusion的定义：左室扭转表示为CL剪切量化的2D和3D分析方法是密切相关的。因此，建议使用更快的二维方法进行扭转计算。
Purpose: To compare left ventricular (LV) torsion represented as the circumferential-longitudinal (CL) shear angle between 2D and 3D quantification, using cardiovascular magnetic resonance (CMR).Methods: CMR tagging was performed in six healthy volunteers. From this, LV torsion was calculated using a 2D and a 3D method. The cross-correlation between both methods was evaluated and comparisons were made using Bland-Altman analysis.Results: The cross-correlation between the curves was r(2) = 0.97 +/- 0.02. No significant time-delay was observed between the curves. Bland-Altman analysis revealed a significant positive linear relationship between the difference and the average value of both analysis methods, with the 2D results showing larger values than the 3D. The difference between both methods can be explained by the definition of the 2D method.Conclusion: LV torsion represented as CL shear quantified by the 2D and 3D analysis methods are strongly related. Therefore, it is suggested to use the faster 2D method for torsion calculation.