A layered model of a virtual human intestine for surgery simulation.
Med Image Anal
; 9(2): 123-32, 2005 Apr.
Article
en En
| MEDLINE
| ID: mdl-15721228
ABSTRACT
In this paper, we propose a new approach to simulate the small intestine in a context of laparoscopic surgery. The ultimate aim of this work is to simulate the training of a basic surgical gesture in real-time moving aside the intestine to reach hidden areas of the abdomen. The main problem posed by this kind of simulation is animating the intestine. The problem comes from the nature of the intestine a very long tube which is not isotropically elastic, and is contained in a volume that is small when compared to the intestine's length. It coils extensively and collides with itself in many places. To do this, we use a layered model to animate the intestine. The intestine's axis is animated as a linear mechanical component. A specific sphere-based model handles contacts and self-collisions. A skinning model is used to create the intestine's volume around the axis. This paper discusses and compares three different representations for skinning the intestine a parametric surface model and two implicit surface models. The first implicit surface model uses point skeletons while the second uses local convolution surfaces. Using these models, we obtained good-looking results in real-time. Some videos of this work can be found in the online version at doi 10.1016/j.media.2004.11.006 and at www-imagis.imag.fr/Publications/2004/FLAMCFC04.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Gráficos por Computador
/
Interfaz Usuario-Computador
/
Interpretación de Imagen Asistida por Computador
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Cirugía Asistida por Computador
/
Intestinos
/
Modelos Biológicos
Tipo de estudio:
Evaluation_studies
Límite:
Humans
Idioma:
En
Revista:
Med Image Anal
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2005
Tipo del documento:
Article
País de afiliación:
Francia