Local force model for cardiac dynamics analysis from volumetric image sequences

被引：6
作者：
Fan, L
Tamez-Pena, JG
Chen, CW
机构：
[1] HanWorld Int Inc, Chicago, IL 60615 USA
[2] Univ Rochester, Dept Elect & Comp Engn, Rochester, NY 14627 USA
[3] Univ Missouri, Dept Elect Engn, Columbia, MO 65211 USA
来源：
COMPUTERIZED MEDICAL IMAGING AND GRAPHICS | 2003年 / 27卷 / 06期
关键词：
motion estimation; cardiac images; dynamic analysis; surface modeling;
D O I：
10.1016/S0895-6111(03)00037-5
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We propose a local force model based on the kinetics of the left ventricle (LV) surfaces to characterize the complex nonrigid motion that the heart undergoes. The left ventricle motion is analyzed in a coarse-to-fine fashion. First, global motion and deformation are analyzed and compensated with hierarchical surface modeling. Then, we propose a physics-based model of local deformation derived from the dynamics of independent point masses driven by local external force. Experimental results show that the ensembles of the estimated point mass trajectories match well with the realistic left ventricle surface dynamics. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：437 / 446
页数：10
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