We present a data structure for interactive deformation of complicated organ models, such as hearts, and a technique for automatically constructing the data structure from given medical images. The data structure is a dual model comprising of a graph structure for elastic simulation and a surface mesh for visualization. The system maps the simulation results to the mesh using a skinning technique. First, the system generates a dense graph and mesh from input medical images; then, it independently reduces them. Finally, the system establishes correspondence between the reduced graph and mesh by backtracking the reduction process. We also present an interactive browser for exploring heart shapes, and report initial feedback from target users.



  • Kazutaka Nakashima, Yuki Koyama, Takeo Igarashi, Takashi Ijiri, Shin Inada, Kazuo Nakazawa, "Interactive Deformation of Structurally Complex Heart Models Constructed from Medical Images", Eurographics 2016 Short Papers.
    • Eurograchics Digital Library: EG DL
    • Paper (Author's copy): pdf


We thank Hirofumi Seo for providing valuable comments on shader development. We also thank Isao Shiraishi and Ken-ichi Kurosaki for providing the CT volumes used in the paper and for their valuable comments. This study was supporeted by Grants-in-Aid for Scientific Research (B) 25282138 from the Ministry of Education Culture, Sports, Science and Technology, and by Intramural Research Fund (27-4-5) for Cardiovascular Diseases of National Cerebral and Cardiovascular Center.