By Topic

In vitro validation of viscoelastic and nonlinear physical model of liver for needle insertion simulation

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Kobayashi, Y. ; Consolidated Res. Inst. for Adv. Sci. & Med. Care, Waseda Univ., Tokyo ; Onishi, Akinori ; Watanabe, H. ; Hoshi, T.
more authors

Needle insertion treatments require accurate placement of the needle tip into the target cancer. However, it is difficult to insert the needle into the cancer because of cancer displacement due to the organ deformation. Then, a path planning using numerical simulation to analyze the deformation of the organ is important for the accurate needle insertion. The objective of our work is to develop and validate a viscoelastic and nonlinear physical liver model. First, an overview is given of the development of the physical liver model. Second, the experimental method to validate the model is explained. In-vitro experiments that made use of a pigpsilas liver were conducted for comparison with the simulation using the model. Results of the in-vitro experiment showed that the liver model reproduces (1) the relationship between needle displacement and force during needle insertion; (2) velocity dependence of needle displacement and force when a puncture occurs; and (3) nonlinear and viscoelastic response of displacement at an internally located point displacement, with high accuracy.

Published in:

Biomedical Robotics and Biomechatronics, 2008. BioRob 2008. 2nd IEEE RAS & EMBS International Conference on

Date of Conference:

19-22 Oct. 2008