Title :
Analysis of Left Ventricular Surface Deformation during Isovolumic Contraction
Author :
Si Yong Yeo ; Liang Zhong ; Yi Su ; Ru San Tan ; Ghista, D.N.
Author_Institution :
A*STAR, Singapore
Abstract :
The rapid pressure built-up in the left ventricular (LV) cavity is mainly due to the contraction of the helically oriented myocardial fibers, and its associated wall deformation. In this paper, we recover and elucidate the left ventricular wall motion during isovolumic contraction using a shape-based tracking approach. In particular, the LV surface properties are derived by means of local surface fitting, and the point-correspondences between successive time frames are determined using a thin plate bending model. Results show that the LV motion during isovolumic contraction is largely contributed by the twisting action of the LV.
Keywords :
biomechanics; biomedical MRI; cardiology; deformation; medical image processing; muscle; surface fitting; cardiac MRI; helically oriented myocardial fibers; isovolumic contraction; left ventricular cavity; local surface fitting; point-correspondences; shape-based tracking approach; successive time frames; surface deformation; thin plate bending model; wall motion; Cardiology; High performance computing; Image reconstruction; Image resolution; Image segmentation; Magnetic resonance imaging; Myocardium; Surface fitting; Surface reconstruction; Tracking; Heart Ventricles; Humans; Image Processing, Computer-Assisted; Magnetic Resonance Imaging; Models, Cardiovascular; Myocardial Contraction; Ventricular Function, Left;
Conference_Titel :
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE
Conference_Location :
Lyon
Print_ISBN :
978-1-4244-0787-3
DOI :
10.1109/IEMBS.2007.4352408
