Video n. 76

Surgical needle insertion simulation with combined visual and haptic feedback

Antonio Zorcolo, Enrico Gobbetti

Presented at MMVR2000, San Francisco, CA, USA, January 2000.

  • Date: 03/99
  • Duration: 00:01:26
  • Production: CRS4 - D
  • Master: 008-005-9901
  • Encoding: PAL
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    We have developed an experimental catheter insertion simulation system supporting head-tracked stereoscopic viewing of volumetric anatomic reconstructions registered with direct haptic 3D interaction. The system takes as input data acquired with standard medical imaging modalities and regards it as a visual and haptic environment whose parameters are interactively defined using look-up tables. The system's display, positioned like a surgical table, provide a realistic impression of looking down at the patient. Measuring head motion via a six degrees-of-freedom head tracker, good positions to observe the anatomy and identify the catheter insertion point are quickly established with simple head motion. By generating appropriate stereoscopic images and co-registering physical and virtual spaces beforehand, volumes appear at fixed physical positions and it is possible to control catheter insertion via direct interaction with a PHANToM haptic device. During the insertion procedure, the system provides perception of the effort of penetration and deviation inside the traversed tissues. Semi-transparent volumetric rendering augments the sensory feedback with the visual indication of the inserted catheter position inside the body.

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