Haber Idith, Metaxas Dimitris N, Geva Tal, Axel Leon
Children's Hospital, Dept. of Cardiology, 300 Longwood Ave., Bader-2, Boston, MA 02115, USA.
Am J Physiol Heart Circ Physiol. 2005 Nov;289(5):H1826-33. doi: 10.1152/ajpheart.00442.2005. Epub 2005 Jun 17.
The right ventricle (RV) of the heart is responsible for pumping blood to the lungs. Its kinematics are not as well understood as that of the left ventricle (LV) due to its thin wall and asymmetric geometry. In this study, the combination of tagged MRI and three-dimensional (3-D) image-processing techniques was used to reconstruct 3-D RV-LV motion and deformation. The reconstructed models were used to quantify the 3-D global and local deformation of the ventricles in a set of normal subjects. When compared with the LV, the RV exhibited a similar twisting pattern, a more longitudinal strain pattern, and a greater amount of displacement.
心脏的右心室负责将血液泵入肺部。由于其薄壁和不对称的几何形状，其运动学不如左心室那样为人所熟知。在本研究中，标记磁共振成像（MRI）与三维（3-D）图像处理技术相结合，用于重建三维右心室-左心室运动和变形。重建模型用于量化一组正常受试者心室的三维整体和局部变形。与左心室相比，右心室呈现出相似的扭转模式、更明显的纵向应变模式以及更大的位移量。
