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[176] Citation: Brown, J. Rosen, M. N. Sinanan, B. Hannaford,
'In-Vivo and Postmortem Compressive Properties of Porcine Abdominal Organs,'
Lecture Notes in Computer Science, Medical Image Computing and Computer-Assisted Intervention - MICCAI 2003, vol. 2878, pp. 238 -245, Toronto, Canada., 2003.
Abstract
In order to provide realistic haptic feedback, simulators
must incorporate accurate computational models of the in-vivo
mechanical behavior of soft tissues. Surgical simulation
technology has progressed rapidly but lacks a comprehensive
database of soft tissue mechanical properties with which
to incorporate. Simulators are often designed purely based
on what "feels about right;" quantitative empirical data
are lacking. It is important to test tissues in-vivo and
apply surgically relevant ranges of force, deformation,
and duration. A motorized endoscopic grasper was used to
test seven porcine abdominal organs invivo, in-situ, and
ex-corpus with cyclic and static compressive loadings.
Elastic and stress relaxation characteristics were examined.
Results from liver are presented here. Notable differences
were found between successive squeezes and between conditions
for elastic and relaxation behaviors.
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Updated: Tue Jul 15 23:54:51 2008
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