Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking
Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking
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DOI：
10.3791/2356
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发表时间：
2011-02-01
影响因子：
1.2
通讯作者：
Mazur, Wojciech
中科院分区：
文献类型：
--
作者：
Hor, Kan N.;Baumann, Rolf;Mazur, Wojciech
目的：测量心肌组织中的参数如应变的准确且实用的方法具有很大的临床价值，因为已经表明，应变是比常用参数EF更敏感且更早的收缩功能障碍的标志物。目前用于CMR的技术是耗时的并且难以在临床实践中实施。特征跟踪是一种技术，可以导致更多的自动化和鲁棒性的定量分析的医学图像与更少的时间消耗比可比methods.Methods：一个自动或手动输入在一个单一的阶段作为一个初始化，从该系统开始跟踪代表解剖结构随着时间的推移的个别模式的位移。该方法的特点是图像不需要以任何方式预先处理，例如标记CMR图像。结果：该方法非常适合于跟踪肌肉组织，并允许心肌和血流的定量阐述。结论：这种新方法提供了一种稳健且节省时间的程序来量化具有位移的心肌组织和血液，常规序列CMR成像的速度和形变参数。因此，它可以在临床实践中实施。
Purpose: An accurate and practical method to measure parameters like strain in myocardial tissue is of great clinical value, since it has been shown, that strain is a more sensitive and earlier marker for contractile dysfunction than the frequently used parameter EF. Current technologies for CMR are time consuming and difficult to implement in clinical practice. Feature tracking is a technology that can lead to more automization and robustness of quantitative analysis of medical images with less time consumption than comparable methods.Methods: An automatic or manual input in a single phase serves as an initialization from which the system starts to track the displacement of individual patterns representing anatomical structures over time. The specialty of this method is that the images do not need to be manipulated in any way beforehand like e.g. tagging of CMR images.Results: The method is very well suited for tracking muscular tissue and with this allowing quantitative elaboration of myocardium and also blood flow.Conclusions: This new method offers a robust and time saving procedure to quantify myocardial tissue and blood with displacement, velocity and deformation parameters on regular sequences of CMR imaging. It therefore can be implemented in clinical practice.