Evaluation of left ventricular torsion by cardiovascular magnetic resonance.
Evaluation of left ventricular torsion by cardiovascular magnetic resonance.
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DOI：
10.1186/1532-429x-14-49
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发表时间：
2012-07-24
期刊：
影响因子：
--
通讯作者：
Cowan BR
中科院分区：
文献类型：
--
作者：
Young AA;Cowan BR
最近，人们对左室扭转及其与症状和症状前疾病过程的关系产生了相当大的兴趣。扭转提供了关于心肌组织收缩和舒张功能的有用的额外信息。简单有效地进行左心室扭转的CMR评估。然而，目前在扭转运动的报告和用于其计算的程序方面存在很大差异。例如，扭转已经表示为扭转（度）、单位长度扭转（度/mm）、剪切角（度）和剪切应变（无量纲）。本文回顾了目前的临床应用，并展示了扭转如何使人们了解左心室力学和左心室几何形状和心肌细胞纤维结构对心脏功能的影响。最后，它提供了建议CMR测量协议，试图刺激标准化的扭矩计算，并建议有用的未来研究领域。
Recently there has been considerable interest in LV torsion and its relationship with symptomatic and pre-symptomatic disease processes. Torsion gives useful additional information about myocardial tissue performance in both systolic and diastolic function. CMR assessment of LV torsion is simply and efficiently performed. However, there is currently a wide variation in the reporting of torsional motion and the procedures used for its calculation. For example, torsion has been presented as twist (degrees), twist per length (degrees/mm), shear angle (degrees), and shear strain (dimensionless). This paper reviews current clinical applications and shows how torsion can give insights into LV mechanics and the influence of LV geometry and myocyte fiber architecture on cardiac function. Finally, it provides recommendations for CMR measurement protocols, attempts to stimulate standardization of torsion calculation, and suggests areas of useful future research.