![](bg6.png)
Figure 8: Lungs motion.
6 CONCLUSIONS
We have developed a complete model of the
respiratory system built from “virtual patient” data.
A simple model of the diaphragm, which was
missing in our previous studies, has been introduced.
We showed preliminary results, which are in
accordance with the anatomical reality. The central
part of the diaphragm tends to move downwards,
while the muscular part motion tends to be lateral
oriented downwards due to rib motions. In future
works, the model should be applied on a real
patient’s data to enable quantitative comparisons of
the results. The applied nodal forces should be
replaced by more appropriated formulations. In
particular, the forces could be parallel to muscular
fibres in agreement with anatomy and derived from
biomechanical considerations. Last, the forces
should be correlated to thoracic motion and air flow
to the lungs.
ACKNOWLEDGMENTS
We thank the French League against Cancer and
PRRH ETOILE for their financial support.
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