Deformable organ model using the sphere-filled method for virtual surgery

Shigeyuki Suzuki, Naoki Suzuki, Asaki Hattori, Akihiro Takatsu, Akihiko Uchiyama

Research output: Contribution to journalArticlepeer-review


We have been developing a virtual surgery simulation system that uses virtual reality techniques. In order to perform real-time simulation, we have to develop a deformable organ model. We made a method to create an elastic organ model by the nature of 'sphere-filled model'. This model is suited for real-time simulation and quantitative deformation. Furthermore, we equipped this model with a sense of touch a sense of force by connecting it to a force feedback device. With a patient's 3D image reconstructed from MRI, we will able to perform virtual surgery while taking into account individual differences in organ shape, blood vessel structures and so on. Normally, manipulations of an organ model were limited to the basic surgical manuevers. However, the model in initial stage becomes unmanageable when faced with complicated incisions. Therefore, we modified this model by using a new algorithm for organ deformation which permits various, complicated incisions. The modified sphere-filled model provided the system with a more realistic simulation of various organ manipulations in virtual space.

Original languageEnglish
Pages (from-to)2416-2418
Number of pages3
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Publication statusPublished - 2000
Externally publishedYes


  • Force feedback
  • Incision
  • Sphere-filled model
  • Virtual reality

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics


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