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Enhancing Realism of Wet Surfaces in Temporal Bone Surgical Simulation

Identifieur interne : 004222 ( Main/Curation ); précédent : 004221; suivant : 004223

Enhancing Realism of Wet Surfaces in Temporal Bone Surgical Simulation

Auteurs : Thomas Kerwin ; Han-Wei Shen ; Don Stredney

Source :

RBID : PMC:2748262

English descriptors

Abstract

We present techniques to improve visual realism in an interactive surgical simulation application: a mastoidectomy simulator that offers a training environment for medical residents as a complement to using a cadaver. As well as displaying the mastoid bone through volume rendering, the simulation allows users to experience haptic feedback and appropriate sound cues while controlling a virtual bone drill and suction/irrigation device. The techniques employed to improve realism consist of a fluid simulator and a shading model. The former allows for deformable boundaries based on volumetric bone data, while the latter gives a wet look to the rendered bone to emulate more closely the appearance of the bone in a surgical environment. The fluid rendering includes bleeding effects, meniscus rendering, and refraction. We incorporate a planar computational fluid dynamics simulation into our three-dimensional rendering to effect realistic blood diffusion. Maintaining real-time performance while drilling away bone in the simulation is critical for engagement with the system.


Url:
DOI: 10.1109/TVCG.2009.31
PubMed: 19590102
PubMed Central: 2748262

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PMC:2748262

Le document en format XML

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<term>General Surgery (education)</term>
<term>Hemorheology</term>
<term>Humans</term>
<term>Image Processing, Computer-Assisted (methods)</term>
<term>Mastoid (anatomy & histology)</term>
<term>Mastoid (surgery)</term>
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<p id="P1">We present techniques to improve visual realism in an interactive surgical simulation application: a mastoidectomy simulator that offers a training environment for medical residents as a complement to using a cadaver. As well as displaying the mastoid bone through volume rendering, the simulation allows users to experience haptic feedback and appropriate sound cues while controlling a virtual bone drill and suction/irrigation device. The techniques employed to improve realism consist of a fluid simulator and a shading model. The former allows for deformable boundaries based on volumetric bone data, while the latter gives a wet look to the rendered bone to emulate more closely the appearance of the bone in a surgical environment. The fluid rendering includes bleeding effects, meniscus rendering, and refraction. We incorporate a planar computational fluid dynamics simulation into our three-dimensional rendering to effect realistic blood diffusion. Maintaining real-time performance while drilling away bone in the simulation is critical for engagement with the system.</p>
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