Sciweavers

Share
MICCAI
2007
Springer

Modeling of Needle-Tissue Interaction Using Ultrasound-Based Motion Estimation

11 years 11 months ago
Modeling of Needle-Tissue Interaction Using Ultrasound-Based Motion Estimation
Abstract. A needle-tissue interaction model is an essential part of every needle insertion simulator. In this paper, a new experimental method for the modeling of needle-tissue interaction is presented. The method consists of measuring needle and tissue displacements with ultrasound, measuring needle base forces, and using a deformation simulation model to identify the parameters of a needle-tissue interaction model. The feasibility of this non-invasive approach was demonstrated in an experiment in which a brachytherapy needle was inserted into a prostate phantom. Ultrasound radio-frequency data and the time-domain cross-correlation method, often used in ultrasound elastography, were used to generate the tissue displacement field during needle insertion. A three-parameter force density model was assumed for the needle-tissue interaction. With the needle displacement, tissue displacement and needle base forces as input data, finite element simulations were carried out to adjust the mode...
Ehsan Dehghan, Xu Wen, Reza Zahiri-Azar, Maud Marc
Added 14 Nov 2009
Updated 14 Nov 2009
Type Conference
Year 2007
Where MICCAI
Authors Ehsan Dehghan, Xu Wen, Reza Zahiri-Azar, Maud Marchal, Septimiu E. Salcudean
Comments (0)
books