ISSN 1000-1239 CN 11-1777/TP

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3D Left Ventricle Surface Reconstruction Based on Level Sets

Zhou Zeming1,3, Wang Yuanquan1, Pheng Ann Heng2, and Xia Deshen1   

  1. 1(Department of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094) 2(Department of Computer Science and Engineering, Chinese University of Hong Kong, Hong Kong) 3(Meteorology College, People's Liberation Army University of Science and Technology, Nanjing 211101)
  • Online:2005-07-15

Abstract: A 3D left ventricle (LV) surface reconstruction algorithm is proposed by using 2D MRI slices. MRI slices can capture the boundary deformation in the imaging planes, but the boundary deformation information between slices cannot be achieved due to the lack of imaging data. A deformable model is used to reconstruct the shape of the LV: first, the dynamic equation governing the surface deformation is deduced; secondly the image planes are mapped to the reconstruction coordinate system. From the slices data, the external force exerted on the surface is defined and the elastic force of the surface is constructed by mean curvature of the deformation surface. Finally, a level set method is applied to solve the dynamic equation for LV shape. The results of the experiments demonstrate the effectiveness of the reconstruction algorithm.

Key words: MRI, MRI slices, deformable models, level set method, surface reconstruction