Assessment of global and regional left ventricular
twist and displacement in anterior myocardial infarction using 2-dimensional
strain imaging
Assessment of global and regional left ventricular
twist and displacement in anterior myocardial infarction using 2-dimensional
strain imaging
Wei HAN MM1,Ming-Xing XIE MD2,Qing LV MD2,Xin-Fang WANG MD2,Li ZHANG MM2,
1.Department of Obstetrics
and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong
University of Science and Technology, Wuhan 430030, China; 2.Department of Ultrasonography,
Union Hospital, Tongji Medical College, Huazhong University of Science
and Technology, Wuhan 430022, China;
Abstract：The recent development of 2-dimensional strain (2D strain) imaging can provide a powerful alternative for assessing left ventricular (LV) torsion. This study was conducted to evaluate the global and regional left ventricular twist by 2D strain in patients with anterior wall myocardial infarction (AMI). A total of 55 AMI patients were divided into two groups according to their ejection fraction (EF) values (group A: LVEF≥50%; group B: LVEF<50%), and 35 normal people served as the control group. Using 2-dimensional strain software, global and regional LV rotation and displacement were obtained at two planes. Compared with the control group, patients of group A showed reduced peak LV twist of the anterior and anterior-septal wall (9.26±1.89vs 10.74±2.67; 9.71±1.71vs 11.36±2.29, both P<0.05), but the radial displacement and global twist were maintained (P>0.05). Differently, regional and global LV twist and radial displacement in patients of group B deceased significantly, especially in the anterior and anterior-septal wall, as compared with patients in the control or group A (both P<0.05). Moreover, a strong correlation was noted between peak twist and radial displacement; the twist-displacement loop was markedly distorted in patients of group B. This study demonstrated that 2D strain has a potential ability for quantification of left ventricular global and segment twist and radial displacement in patients with coronary artery disease.
. Assessment of global and regional left ventricular
twist and displacement in anterior myocardial infarction using 2-dimensional
strain imaging[J]. Front. Med., 2010, 4(1): 71-76.
Wei HAN MM, Ming-Xing XIE MD, Qing LV MD, Xin-Fang WANG MD, Li ZHANG MM, . Assessment of global and regional left ventricular
twist and displacement in anterior myocardial infarction using 2-dimensional
strain imaging. Front. Med., 2010, 4(1): 71-76.
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