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MICCAI
2005
Springer

A Velocity-Dependent Model for Needle Insertion in Soft Tissue

10 years 21 days ago
A Velocity-Dependent Model for Needle Insertion in Soft Tissue
Models that predict the soft tissue deformation caused by needle insertion could improve the accuracy of procedures such as brachytherapy and needle biopsy. Prior work on needle insertion modeling has focused on static deformation; the experiments presented here show that dynamic effects such as relaxation are important. An experimental setup is described for recording and measuring the deformation that occurs with needle insertion into a soft tissue phantom. Analysis of the collected data demonstrates the time- and velocity-dependent nature of the deformation. Deformation during insertion is shown to be well represented using a velocity-dependent force function with a linear elastic finite element model. The model's accuracy is limited to the period during needle motion, indicating that a viscoelastic tissue model may be required to capture tissue relaxation after the needle stops.
Jessica R. Crouch, Chad M. Schneider, Josh Wainer,
Added 15 Nov 2009
Updated 15 Nov 2009
Type Conference
Year 2005
Where MICCAI
Authors Jessica R. Crouch, Chad M. Schneider, Josh Wainer, Allison M. Okamura
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